diogobernardino / williamchart Goto Github PK

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Android Library to rapidly develop attractive and insightful charts in android applications.

Kotlin 99.73% Makefile 0.27%

charts android-library java williamchart android

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williamchart's Issues

Can I set YAxis Label to right?

I want to set YAxis label to right.
How can I do?

Thank You

Improve the demo app

Hi Diogo,

It looks like it is a very nice library, however I am not sure of what kind of features are available. The current demo app does not provide enough examples. It would be great to provide a demo app with various customizations and features. For example, is the chart scrollable, zoomable, can the data be added dynamically etc. It would be very useful for the future visitors.

Zooming feature

Hi Diogo,

Thanks for the awesome library! I am curious, are you planning to implement a zooming feature too? How difficult would that be to implement?

How to Show toolbar tip values without clicking bar in bar chart ?

Hi, I want to show toolbar tip all the corresponding values in bar chart without clicking bar.

Legend?

Are there plans to include a legend?

Cant resolve getAnimation(boolean)

Trying to implement a LineChart in my app. However, the following line gives me trouble.

.show(getAnimation(true).setEndAction(mEnterEndAction))

The error thrown is as follows:

Cannot resolve method 'getAnimation(boolean)'

Any ideas?

UPDATE:

facepalm nvm, forgot to add the private getAnimation method.

Adding a target line to the line chart.

Is it possible to add a target line to the line graph?

Changing chart's data while still animating causes ArrayIndexOutOfBoundsException

I have a bar chart with variable number of bars. I enabled animations:

mBarChart.show(new Animation())

After that I noticed that it crashes when showing a chart with more bars than the previous one. It happens only if the previous animation hasn't ended yet.

The exception says:

java.lang.ArrayIndexOutOfBoundsException: length=3; index=3
            at com.db.chart.view.animation.Animation.getUpdate(Animation.java:349)
            at com.db.chart.view.animation.Animation.access$100(Animation.java:33)
            at com.db.chart.view.animation.Animation$1.run(Animation.java:90)
            at android.os.Handler.handleCallback(Handler.java:730)
            at android.os.Handler.dispatchMessage(Handler.java:92)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:5103)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:525)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
            at dalvik.system.NativeStart.main(Native Method)

Using the debuger I observed that nEntries was 4 (3rd chart has 4 bars) while mInitTime had only 3 elements (2nd chart has 3 bars).

Unicode character in axis label

Hi.Thanks a lot.
I've set Persian labels and it become question marks.

and this my labels in code:

private  String[] lineLabels = new String[7];

private void intitLineLables() {
        String[] dayTitle={"یکشنبه","دوشبه","سه شنبه","چهارشنبه","پنجشبه","جمعه","شنبه"};
        Calendar cal = Calendar.getInstance();
        Calendar calendar = Calendar.getInstance();
        int day = calendar.get(Calendar.DAY_OF_WEEK);

        for (int i=6;i>=0;--i){
            --day;
            if(day==-1)
                day=6;
            lineLabels[i]=dayTitle[day];
        }
    }

Removing one set from graph

Hi,
in my opinion, you should add function to hide/remove single set(by passing index as argument).

Best regards
shalastra

Skip Point and more

Is it possible to make horizontal Labels (String[]) from 1 to 30 AND set the points to 2, 10, 12, 20 (e.g.)?
Or do i have to set the same String[]-Lenght for the Points and the Labels?
Or maybe i can set @Null-Values to Skip the Points?

My LineChart should look like that:

How to import the library

This library looks great and I would be glad to use it! But after more than 2 hours of trying to import/inlcude the library into Android Studio, I gave up.

Probably it is fault on my side as it seems other people made it work.
I managed to get the library into my local maven repository, but anyway, Android Studio always ended up throwing an error at me.

Error:A problem occurred configuring project ':app'.

Could not resolve all dependencies for configuration ':app:_debugCompile'.
Could not find com.db.williamchart:williamchart:1.0.0.
Required by:
MyAppName:app:unspecified

No matter what repositories or dependencies I specify in the build.gradle files, it won't work for me :(

Perhaps describe more specifically what goes where in the 'Grade Build' section of README.md?

Thank you 😃

Bar charts with only 1 data point cause NPE

Hi there,

I'm finding I'm getting NPE exceptions with bar charts that only have one Bar in a single BarSet.
The exception is coming from onPreDrawChart(ArrayList data) in BarChartView.java:

calculateBarsWidth(data.size(), data.get(0).getEntry(0).getX(),
                            data.get(0).getEntry(1).getX());

This code assumes that there is at least 2 entries.

Create dependencies for Android Studio

Hi!
I like so much this library!! :) But I would suggest to enhance a compiled dependencies for Android Studio (Gradle)...
for example:

dependencies {
compile 'com.diogobernardino.williamchart:+'
}

It is very useful for the developers! :)

Bar IndexOutOfBoundsException

Filling up BarChartView with BarSet composed of Bars that have empty label String and trying to show the chart fires an error.

...
bar = new Bar("", 64);
...

java.lang.IndexOutOfBoundsException
            at android.graphics.Paint.getTextBounds(Paint.java:2525)
            at com.db.chart.view.YController.init(YController.java:141)
            at com.db.chart.view.ChartView$1.onPreDraw(ChartView.java:138)
            at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:888)
            at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2199)
            at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1254)
            at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6632)
            at android.view.Choreographer$CallbackRecord.run(Choreographer.java:814)
            at android.view.Choreographer.doCallbacks(Choreographer.java:614)
            at android.view.Choreographer.doFrame(Choreographer.java:584)
            at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:800)
            at android.os.Handler.handleCallback(Handler.java:733)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:146)
            at android.app.ActivityThread.main(ActivityThread.java:5487)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
            at dalvik.system.NativeStart.main(Native Method)

Hide or show line in line chart

Is it possible to toggle the visibility of the line between points in the line chart - I would love to see that?!

Cannot build with gradle

I'm using Android Studio 1.1.0. I've been having some issues with building my project with this library. I added my ANDROID_HOME environment variable using the terminal in Android Studio.

set ANDROID_HOME=C:\...\Android\android-sdk

So using the terminal I navigate to C:...\WilliamChart-master which contains the library source code I downloaded from github (the root directory where the gradlew file is).

And I managed to do installDebug properly.

gradlew installDebug

But install doesn't seem to work

gradlew install

I get the following errors:

2 errors                                
58 warnings                             
:library:androidJavadocs FAILED         

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':library:androidJavadocs'.
> Javadoc generation failed. Generated Javadoc options file (useful for troubleshooting): 'C:\...\WilliamChart-master\library\build\tmp\androidJavadocs\javadoc.options'

* Try:       
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Here's my build.gradle (app)

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:21.0.3'
    compile 'com.doomonafireball.betterpickers:library:1.5.3'
    compile 'com.db.williamchart:library:1.7.0'
}

Here's my build.gradle (Project)

buildscript {
    repositories {
        jcenter()
        mavenLocal()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.1.0'

    // NOTE: Do not place your application dependencies here; they belong
    // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
        mavenLocal()
    }
}

How to avoid X axis labels and Y axis labels overlapping each other

I noticed that adding empty label (empty string) in the X axis labels helps to avoid overlapping of X and Y labels, however this does not work if I have a lot of data. Then this moves the X labels just a little bit, and I don't always know the amount of data to be plotted.

Is there a way to avoid this overlapping? I thought of adding some space between the Y axis labels and the chart, but I couldn't find such a method implemented...

Method to set the spacing from Label to Axis

OnClickListener on LineChartView

Hey,

I experienced some issues with the onClickListener and onChartClickListener.
It seems that the clickListeners work (just sometimes) only when the chart is drawn with an animation. Without an animation the listeneres does not always get called.

Any recommendations?

Best regards,
froder1k

Log scale support

Any plans for scatter plot with log normal scale? Thanks!

Consider support for pie charts

One of the commonest data representations are through pie charts. It would be a very nice feature.

Setting minimum value for Y axis

Hi,
can you add setter for mMaxLabelValue in YController? It has default value 0(defined in controller). Some graphs might have custom Y axis labels, currently it creates labels from 0 to max setted value in setMaxAxisValue(int, int).

Best regards
shalastra

PS. Great work doing this library.

BarChartView IndexOutOfBoundsException

If I create BarChartView in .xml file like this:

<com.db.chart.view.BarChartView
    xmlns:chart="http://schemas.android.com/apk/res-auto"
    android:id="@+id/chart_BarChartView"
    android:layout_width="match_parent"
    android:layout_height="128dp"
/>

Then get the view with findViewById(R.id.chart_BarChartView); and try to show barChartView.show();, an OutOfBoundsException always fire.

    java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
            at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
            at java.util.ArrayList.get(ArrayList.java:308)
            at com.db.chart.view.YController.init(YController.java:141)
            at com.db.chart.view.ChartView$1.onPreDraw(ChartView.java:138)
            at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:888)
            at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2199)
            at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1254)
            at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6632)
            at android.view.Choreographer$CallbackRecord.run(Choreographer.java:814)
            at android.view.Choreographer.doCallbacks(Choreographer.java:614)
            at android.view.Choreographer.doFrame(Choreographer.java:584)
            at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:800)
            at android.os.Handler.handleCallback(Handler.java:733)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:146)
            at android.app.ActivityThread.main(ActivityThread.java:5487)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
            at dalvik.system.NativeStart.main(Native Method)

StackBarChartView - Support negative values

It seems to lack support for negative bar chart. When I setup the widget with negative values, I get unexpected results.

Change labels text color

Nice library!
Is there a way to change the text color of the labels?

Cant change the color of a single dot in lineChart

Hi, how to change single dots color in line chart? I want the start point and end point have different color. What i am already do
private void updateLineChart() {
mLineChart.reset();

    LineSet dataSet = new LineSet();
    for (int i = 0; i < lineLabels.length; i++) {
        dataSet.addPoint(lineLabels[i], lineValues[0][i]);
        dataSet.setDots(true);
        if (i == 0) {
           dataSet.setDots(true);
           dataSet.setDotsColor(this.getResources().getColor((R.color.horbar_grid)));
            Log.d("TAG", "masuk 3");
        }
    else
    {
        dataSet.setDotsColor(this.getResources().getColor((R.color.horbar_fill)));
        dataSet.beginAt(1);
    }
}
    mLineChart.addData(dataSet);

Adding ChartSets with different lengths

Hi,
let's say you have two data sets, first starts from 0 to 4 X axel, and second from 0 to 6. After adding that kind of sets, graph crashes with
java.lang.IndexOutOfBoundsException: Invalid index 5, size is 5.

Is there any solution for adding sets with different X axel lengths?

Best regards
shalastra

problem with the demo

I have spend much time in making the demo run. I use eclipse for that.

Finally, I use Activity taking place of ActionBarActivity. The demo just starts to run.

Support CandleStickChart view

It would be great component if it will support candles. Even as "pro" version.

Android Studio dependency

Hello,

I was trying to put the dependency on Android Studio in the gradle file:
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
compile 'com.db.williamchart:williamchart:1.0.0'
}

And it gives me this error:
Error:Failed to find: com.db.williamchart:williamchart:1.0.0

Can you help on this?

Obrigado ;)

Do not show linechart if layout height too big

i tryed your example , when set height to 300dp, it not work

    <com.db.chart.view.LineChartView

        xmlns:chart="http://schemas.android.com/apk/res-auto"


        android:layout_height="300dp"
        android:id="@+id/linechart"
        android:layout_width="match_parent"


        android:layout_marginTop="7dp"
        android:layout_marginLeft="7dp"
        android:layout_marginRight="7dp"
        android:layout_marginBottom="2dp"
        android:paddingTop="10dp"
        android:paddingBottom="10dp"
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:background="#00BBA7"
        chart:chart_axisColor="@color/axis"
        chart:chart_typeface="Roboto-Regular.ttf"
        chart:chart_labelColor="@color/label"
        chart:chart_axisBorderSpacing="0dp">
    </com.db.chart.view.LineChartView>


<com.db.chart.view.BarChartView
    xmlns:chart="http://schemas.android.com/apk/res-auto"
    android:id="@+id/barchart"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight=".22"
    android:layout_marginTop="2dp"
    android:layout_marginLeft="7dp"
    android:layout_marginRight="7dp"
    android:layout_marginBottom="2dp"
    android:paddingTop="10dp"
    android:paddingBottom="10dp"
    android:paddingLeft="10dp"
    android:paddingRight="10dp"
    android:background="#F67743"
    chart:chart_axisColor="@color/axis"
    chart:chart_typeface="Roboto-Regular.ttf"
    chart:chart_labelColor="@color/label"
    chart:chart_axisBorderSpacing="25dp"
/>

<com.db.chart.view.HorizontalBarChartView
    xmlns:chart="http://schemas.android.com/apk/res-auto"
    android:id="@+id/horbarchart"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight=".22"
    android:layout_marginTop="2dp"
    android:layout_marginLeft="7dp"
    android:layout_marginRight="7dp"
    android:layout_marginBottom="2dp"
    android:paddingTop="10dp"
    android:paddingBottom="10dp"
    android:paddingLeft="10dp"
    android:paddingRight="10dp"
    android:background="#9e9d24"
    chart:chart_axisColor="@color/axis"
    chart:chart_typeface="Roboto-Regular.ttf"
    chart:chart_labelColor="@color/label"
    chart:chart_axisBorderSpacing="25dp"
    />

<com.db.chart.view.StackBarChartView
    xmlns:chart="http://schemas.android.com/apk/res-auto"
    android:id="@+id/stackbarchart"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight=".22"
    android:layout_marginTop="2dp"
    android:layout_marginLeft="7dp"
    android:layout_marginRight="7dp"
    android:layout_marginBottom="7dp"
    android:paddingTop="10dp"
    android:paddingBottom="10dp"
    android:paddingLeft="10dp"
    android:paddingRight="10dp"
    android:background="#00BAD3"
    chart:chart_axisColor="@color/axis"
    chart:chart_typeface="Roboto-Regular.ttf"
    chart:chart_labelColor="@color/label"
    chart:chart_axisBorderSpacing="25dp"
/>

<LinearLayout 
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight=".10"
    android:orientation="horizontal" >
    <ImageButton
        android:id="@+id/alpha"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight=".17"
        android:src="@drawable/alpha"
        android:background="@drawable/button"
        android:contentDescription="@string/alpha_str"/>
    <View android:layout_width=".5dp"
        android:layout_height="match_parent"
        android:background="#1f3133"/>
    <ImageButton
        android:id="@+id/enter"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight=".17"
        android:src="@drawable/enterb"
        android:background="@drawable/button"
        android:contentDescription="@string/enter_str"/>
    <View android:layout_width=".5dp"
        android:layout_height="match_parent"
        android:background="#1f3133"/>
    <ImageButton
        android:id="@+id/order"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight=".17"
        android:src="@drawable/ordere"
        android:background="@drawable/button"
        android:contentDescription="@string/order_str"/>
    <View android:layout_width=".5dp"
        android:layout_height="match_parent"
        android:background="#1f3133"/>
    <ImageButton
        android:id="@+id/ease"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight=".17"
        android:src="@drawable/ease_cubic"
        android:background="@drawable/button"
        android:contentDescription="@string/ease_str"/>
    <View android:layout_width=".5dp"
        android:layout_height="match_parent"
        android:background="#1f3133"/>
    <ImageButton
        android:id="@+id/play"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight=".30"
        android:src="@drawable/play"
        android:background="@color/button_hey"
        android:contentDescription="@string/play_str"/>
</LinearLayout>

Unavailable in maven central repository?

It would be great to publish at maven central

Bars has covered labels

Hi dev!
Is it possible to make a bars do not lay on labels? It covers labels now.

I was playing with opacity, but it seems that bars are forced to be always solid.

I cant seem to get LineChart to show

Trying my best to implement a linechart in my app, however, no matter what I do I cant seem to get it to show at all. I am probably doing something wrong or missing some essential line of code, but here is my current code -> https://gist.github.com/Zyg0te/78921bc90c532b5cd3b8

Any input on what's missing would be most appreciated. The library seems awesome.

Issue: barchart broken sometime after 9/23 commit

I'm going to try and narrow down @ what point the barchart broke, to identify the commit, but just wanted to bring up that as of 9/23's commit, my graphs look like this:

After pulling the latest commit, my chart looks like this:

I've made no changes to my code, I would be happy to paste my entire .java file, or the relevant code if necessary. I'll update this as i pull each commit to find where it breaks. The last working commit was 8671e62 on 9/23.

Progress:
82cfda8 working
050fa6d broken

so it appears the tooltips update did something, and the problem is in:

 -public abstract class ChartView extends View{
 +public abstract class ChartView extends RelativeLayout{

By changing RelativeLayout back to View, and commenting out all tooltip code, the graph works again.

Vertical and Horizontal grids

I want to divide my LineChart into different sections, like below:

I tried using setHorizontalGrid and setVerticalGrid methods, but they just draw lines. And also, they draw lines for each entry (In my case, I would like to draw grid for multiple entries). And what would make it even better is adding an option to set the line labels on X axis for each Grid, centered, like in the picture.

How can I achieve such kind of result (or something close to that)? Any suggestions? Thanks!

LineChart IndexOutOfBoundsException

I have IndexOutOfBoundsException when I'm trying add several Points(" ", 0) to lineSet and trying to show LineChartView

java.lang.IndexOutOfBoundsException: Invalid index 1, size is 1
at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251)
at java.util.ArrayList.get(ArrayList.java:304)
at com.db.chart.view.YController.parseYPos(YController.java:282)
at com.db.chart.view.ChartView$1.onPreDraw(ChartView.java:135)
at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:671)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1818)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:998)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4212)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
at android.view.Choreographer.doCallbacks(Choreographer.java:555)
at android.view.Choreographer.doFrame(Choreographer.java:525)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)

Change the color of a single or multiple dots

Hello, I was wondering if it is possible to change the color of a particular dot on the line chart.

Values in LineSet not displayed correctly if LINE_MIN > 0

private final static String[] lineLabels = {"JAN", "FEB", "MAR", "APR", "MAY", "JUN", "JUL"};
 private final static float[][] lineValues = { {201f, 202f, 210f, 220f, 222.5f, 222.5f, 230f},
            {-9f, -2f, -4f, -3f, -7f, -5f, -3f}};
    private final static int LINE_MAX = 240;
    private final static int LINE_MIN = 200;
    private final static int[] beginOrder = {0, 1, 2, 3, 4, 5, 6};

    @AfterViews
    public void setup(){
        Paint mLineGridPaint = new Paint();
        mLineGridPaint.setColor(this.getResources().getColor(R.color.primary_light));
        mLineGridPaint.setPathEffect(new DashPathEffect(new float[] {5,5}, 0));
        mLineGridPaint.setStyle(Paint.Style.STROKE);
        mLineGridPaint.setAntiAlias(true);
        mLineGridPaint.setStrokeWidth(Tools.fromDpToPx(.75f));

        mainChart.reset();
        mainChart.setOnEntryClickListener(lineEntryListener);
        LineSet dataSet = new LineSet();
        dataSet.addPoints(lineLabels, lineValues[0]);
        dataSet.setDots(true)
                .setDotsColor(this.getResources().getColor(R.color.light_green_200))
                .setDotsRadius(Tools.fromDpToPx(5))
                .setDotsStrokeThickness(Tools.fromDpToPx(2))
                .setDotsStrokeColor(this.getResources().getColor(R.color.light_green_400))
                .setLineColor(this.getResources().getColor(R.color.light_green_400))
                .setLineThickness(Tools.fromDpToPx(3));
        mainChart.addData(dataSet);

        mainChart.setBorderSpacing(Tools.fromDpToPx(4))
                .setHorizontalGrid(mLineGridPaint)
                .setXAxis(true)
                .setXLabels(XController.LabelPosition.OUTSIDE)
                .setYAxis(true)
                .setYLabels(YController.LabelPosition.OUTSIDE)
                .setAxisBorderValues(LINE_MIN, LINE_MAX, 10)
                .setLabelsMetric("kg")
                .show()
        //.show()
        ;
    }

   <com.db.chart.view.LineChartView

        xmlns:chart="http://schemas.android.com/apk/res-auto"
        android:id="@+id/mainChart"
        android:layout_below="@+id/sectionPrograms"
        android:layout_centerInParent="true"
        android:layout_width="match_parent"
        android:layout_height="200dp"
        android:layout_marginTop="7dp"
        android:layout_marginLeft="7dp"
        android:layout_marginRight="7dp"
        android:layout_marginBottom="2dp"
        android:paddingTop="10dp"
        android:paddingBottom="10dp"
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:background="#00FFFFFF"
        chart:chart_axisColor="@color/primary"
        chart:chart_labelColor="@color/secondary_text"
        chart:chart_axisBorderSpacing="0dp"></com.db.chart.view.LineChartView>

Result in this:

If I set LINE_MIN = 0 all values displayed correctly

What I'm doing wrong?

Thanks for the help!

Header position

Hi all,
I've a little problem with the headers of the StackBarChart. the position of the headers is wrong and it's not centered horizontally in the bar. I can't find a way to move them.
The picture below shows my situation:

How can fix this?

Thanks
Nico

Gradient on LineChart and LineSet continues even if endAt is set

I updated the code in drawBackground in the LineChartView class to be this instead to fix it

    private void drawBackground(Canvas canvas, Path path, LineSet set, float minDisplayY) {

    float innerChartBottom = super.getInnerChartBottom();

    mStyle.mFillPaint.setAlpha((int) (set.getAlpha() * 255));

    if (set.hasFill())
        mStyle.mFillPaint.setColor(set.getFillColor());
    if (set.hasGradientFill())
        mStyle.mFillPaint.setShader(
                new LinearGradient(
                        super.getInnerChartLeft(),
                        minDisplayY,
                        super.getInnerChartLeft(),
                        innerChartBottom,
                        set.getGradientColors(),
                        set.getGradientPositions(),
                        Shader.TileMode.MIRROR));

    //Check if we have changed end with EndAt, in that case reduce gradient and set it there
    if (set.getEnd() != set.size()) {
        path.lineTo(set.getEntry(set.getEnd() - 1).getX(), innerChartBottom);
    } else {
        path.lineTo(set.getEntry(set.size() - 1).getX(), innerChartBottom);
    }
    path.lineTo(set.getEntry(0).getX(), innerChartBottom);
    path.close();
    canvas.drawPath(path, mStyle.mFillPaint);
}

If this is not a wanted feature, I think it should be an option atleast in WilliamChart, needless to say, I love WilliamChart :)

How to plot time chart?

I am trying to plot measurements taken on different days (not equidistant). However, I could not figure out how to plot the data based on time (or value). Please see the example below:

As you can see, all the values on the X axis are displayed with the same distance between them.
It would be great to create distance between the values on the X axis, based on their values. Are you planning to implement this support? Or any suggestions to to make this work? Thanks!

Verticle Line not Possible

One a LineChartView I am essentially trying to draw a data set like:

{0, 1}
{0, 2}
{0, 4}

Which should normally be a vertical line. This what I tried in code.

LineSet dataSet = new LineSet();
dataSet.addPoint("F", 1.0f);
dataSet.addPoint("F", 2.0f);
dataSet.addPoint("F", 4.0f);

But that doesn't have the desired effect. It ends up creating a new value for F on the x-axis for each point.

Cannot plot high values in LineChart

Values in Y axis are not plotted properly when they are high.

For example the following values are plotted like this:
{90f, 99f, 91f, 93f, 95f, 97f, 92f}

And these are plotted as:
{115f, 99f, 91f, 100f, 101f, 130f, 105f}

However, plotting low values works just fine:
{10, 3f, 1f, -1f, 11f, 8f, 1f}

Is this a bug? Or am I doing something wrong?

Is it possible to add the chart to a horizontal scrollview?

Hey. I am trying out your library, looks cool =)
I am currently trying to use the Line Chart.

Im wondering if it is possible to add the line chart to a horizontal scrollview and make the spacing between each point fixed.

can't import library using gradle

I add to dependencies in build.gradle this compile 'com.db.williamchart:1. 7.0' but I get such message: How can i handle this problem?
Btw same problem appears on some others libs.
I'm using AndroidStudio 1.1.0
Please help me. Thank You

Enhancement: BarSet from Array?

I was just looking over the code I've got to generate a set of bars..

BarSet wins = new BarSet();     
        List<Integer> wins2 = null;
        try {
        wins2 = new GetHistoryArray().execute("wins").get();
        for (int j = 0; j < wins2.size(); j++) {

            Bar bar = new Bar(mMonths.get(j), wins2.get(j));
            wins.addBar(bar);
        }
    mBarChart.addData(wins);

This would be a heck of a lot easier to implement, if there was a method such as:

BarSet wins = BarSetFromArray(wins2);

One line to generate the entire set. I'm not super familiar with git, but I could probably fork the project, add this as a function in BarSet, but Java isn't my strength still, so maybe someone else can comment?

Any way to Ylabel for minutes:seconds?

Is there any way to have 1:00 1:30 ... etc. for y labels? For now I'm forced to use seconds and setmetric as "s", but I'd love to get a real time reading.

Maybe there is a string override labels for y that I overlooked :) ?

IndexOutOfBoundsException when displaying a bar graph with zero values.

I'm using a bar graph and this happens whenever I set all the values for the bars to zero. I'm not trying to update the graph while it still animating or anything like that. It is just that my user generated data will be retrieved as all zeroes.

Here's the stack trace I get:

java.lang.IndexOutOfBoundsException: Invalid index 1, size is 1
        at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
        at java.util.ArrayList.get(ArrayList.java:308)
        at com.db.chart.view.YController.parsePos(YController.java:97)
        at com.db.chart.view.ChartView$1.onPreDraw(ChartView.java:143)
        at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:847)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1956)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1054)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5779)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
        at android.view.Choreographer.doCallbacks(Choreographer.java:580)
        at android.view.Choreographer.doFrame(Choreographer.java:550)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5221)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)

And this is a simplified version of my code:

BarChartView chart = (BarChartView) this.getView().findViewById(R.id.barchart);
BarSet barSet = new BarSet();
Bar bar;
float[] barValues = {0.0f, 0.0f};
int[] barColors = { R.color.bar1, R.color.bar2};
String[] labels = {"A","B"};

// Creating bars
for(int i = 0; i < barValues.length; i++){
    bar = new Bar(labels[i], barValues[i]);
    bar.setColor(this.getResources().getColor(barColors[i]));
    barSet.addBar(bar);
}
chart.addData(barSet);
chart.setYAxis(false)
        .setYLabels(AxisController.LabelPosition.NONE)
        .show(new Animation()
                .setEasing(new ElasticEaseOut()));

As long as I change one of the values to something different than zero the graph displays just fine.

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