Statistical_Inference/Resampling hanging near end of lesson about swirl_courses HOT 12 OPEN

Hi Wes.

Thanks for the feedback and kind words. Glad you're enjoying swirl,

I don't understand why swirl isn't letting you proceed. When you cut/paste from the hint line, you're not enclosing the command in quotation marks are you? This feedback from swirl indicates that the expression it's evaluating isn't evaluating to an equal value as the one supplied by the answertest. Could you possible show me more of the console transcript?

Thanks. I'll look into this more.

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Hi Regina

Thank you for taking the time to investigate

When I restart Swirl it picks up where the error was (very nice).

Here is a screenshot of the entire RStudio screen

Best regards
Wes

On 12/9/2014 6:46 PM, reginaastri wrote:

Hi Wes.

Thanks for the feedback and kind words. Glad you're enjoying swirl,

I don't understand why swirl isn't letting you proceed. When you
cut/paste from the hint line, you're not enclosing the command in
quotation marks are you? This feedback from swirl indicates that the
expression it's evaluating isn't evaluating to an equal value as the
one supplied by the answertest. Could you possible show me more of the
console transcript?

Thanks. I'll look into this more.

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#79 (comment).

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I've tried and failed to reproduce the problem using the CRAN version of swirl and installing the course from swirl. We have noticed that some code delivered with the course contains a legacy bug, which we'll fix in hopes it magically solves the problem. The bug did not seem to affect me, however, so I doubt that's it.

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Hi Wes,
Your screenshot doesn't appear. Could you please tell us more about the system you're running on - operating system, version numbers, and maybe copy/paste the answers you're submitting to swirl?
Thanks.

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I've just fixed the legacy custom test bug in all the Statinf lessons and pushed to github.

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Hi Regina

Does this help?

R version 3.1.1 (2014-07-10) -- "Sock it to Me"
Copyright (C) 2014 The R Foundation for Statistical Computing
Platform: x86_64-w64-mingw32/x64 (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

library(swirl)

| Hi! I see that you have some variables saved in your workspace. To keep things running smoothly, I recommend
| you clean up before starting swirl.

| Type ls() to see a list of the variables in your workspace. Then, type rm(list=ls()) to clear your
| workspace.

| Type swirl() when you are ready to begin.

rm(list=ls())
swirl()

| Welcome to swirl!

| Please sign in. If you've been here before, use the same name as you did then. If you are new, call yourself
| something unique.

What shall I call you?wes

| Would you like to continue with one of these lessons?

1: Statistical Inference Resampling
2: No. Let me start something new.

Selection:1

| Attemping to load lesson dependencies...

| Package ‘reshape2’ loaded correctly!

| Package ‘ggplot2’ loaded correctly!

| We'll relabel and calculate the difference of means 10000 times and store the differences (of means) in the
| array perms. Here's what the code looks like perms <- sapply(1 : 10000, function(i) testStat(BCcounts,
| sample(group))). Try it now.

perms <- sapply(1 : 10000, function(i) testStat(BCcounts, sample(group)))

| Nice try, but that's not exactly what I was hoping for. Try again. Or, type info() for more options.

| Type perms <- sapply(1 : 10000, function(i) testStat(BCcounts, sample(group))) at the command prompt.

sessionInfo()
R version 3.1.1 (2014-07-10)
Platform: x86_64-w64-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C
[5] LC_TIME=English_United States.1252

attached base packages:
[1] stats graphics grDevices utils datasets methods base

other attached packages:
[1] ggplot2_1.0.0 reshape2_1.4 swirl_2.2.16

loaded via a namespace (and not attached):
[1] colorspace_1.2-4 digest_0.6.4 grid_3.1.1 gtable_0.1.2 httr_0.5 labeling_0.2
[7] MASS_7.3-33 munsell_0.4.2 plyr_1.8.1 proto_0.3-10 Rcpp_0.11.2 RCurl_1.95-4.3
[13] scales_0.2.4 stringr_0.6.2 testthat_0.9.1 tools_3.1.1 yaml_2.1.13

Best regards
Wes

On 12/10/2014 12:25 PM, reginaastri wrote:

Hi Wes,
Your screenshot doesn't appear. Could you please tell us more about
the system you're running on - operating system, version numbers, and
maybe copy/paste the answers you're submitting to swirl?
Thanks.

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Reply to this email directly or view it on GitHub
#79 (comment).

from swirl_courses.

Thanks, Wes!
We still haven't been able to replicate the problem. We're quite puzzled because it looks like you're response should pass the test. You might try reinstalling the course and redoing the lesson, although that's not a very satisfying answer. We'll keep trying to track down the problem.
Best wishes.

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Sometimes just exiting swirl, clearing your workspace (rm(list = ls())), restarting R, then starting swirl back up again helps. You can still resume the lesson where you left off. Let us know what works.

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BTW, we ran the lesson successfully on a 32 bit Windows 7 machine, which is as close as we can get to Wes's setup. We did run the latest version of the course which includes this afternoon's bug fix. Truthfully, though, I can't see how this would be an operating system or a problem with that legacy bug.

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Nick ... I tried your suggestion (exiting swirl, clearing the workspace (rm(list = ls())), restarting R, then starting swirl back up). This did not resolve the issue.

Regina ... I tried a modification of your suggestion (reinstalled the package swirl then reinstalled the lesson Statistical Inference). This resolved the issue - I was able to run through the entire lesson.

Thank you all for your support.

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A puzzlement. I wonder if it was down to that legacy bug.

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Glad it worked! Thanks for keeping us posted.

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