Thanks for the detailed responce I'll try to reprodduce the issue, and get back to you asap

from opentripplanner.

A few first thoughts, the I_have_OTP is not necessary to use the package only for running the automated tests. The first thing that otp_build_graph does is run the internal function otp_checks. It might be useful to run this via opentripplanner:::otp_checks() to see if a more useful error message is produced. But it seems that you have several distinct problems.

1. On your first attempt Java tried to allocate 2097152KB of memory and failed (about 2 GB) which is the default. Perhaps you are running on a laptop with low memory? You could try memory = 1 in otp_build_graph. The demo data should build in 1 GB.

2. You make some changes to your path, I'm not quite sure what you did, do you have a link to the instructions you followed? But it now seems that R is unable to check the Java version which would suggest a problem with your java installation. You can check this manually in Comand Prompt with java -version

from opentripplanner.

thanks @mem48

I am trying on another laptop now so I will update thread soon

from opentripplanner.

As an update, I have uninstalled and reinstalled Java version 8 on my machine and installed the package on another laptop with more memory.

I will ignore Sys.getenv("I_have_OTP") for now as you suggest.

I tried to run this command and received an error:
opentripplanner:::otp_checks()

Error in opentripplanner:::otp_checks() :
Assertion on 'dir' failed: No directory provided.

1. Despite the error with opentripplanner:::otp_checks(), I had success in building the graph by adding memory =1 on both laptops, see below message:

Run the OTP and Build a graph object

log <- otp_build_graph(otp = path_otp, dir = path_data, memory = 1)

Basic checks completed, building graph, this may take a few minutes
Graph built

2. I removed the path and variables as this didn't appear to be necessary on the other laptop. I suspect that the Java upgrade didn't work the first time round. Potentially Java needed a full uninstall first.

C:\Users\Home>java -version

java version "1.8.0_211"
Java(TM) SE Runtime Environment (build 1.8.0_211-b12)
Java HotSpot(TM) Client VM (build 25.211-b12, mixed mode, sharing)

Any further thoughts? Else this can probably be closed

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Seems like its fixed, the otp_ckecks requires several arguments to work, sorry I did not make that clear before. So the error is expected. I think for now I will update the vignettes to mention memory requirements and perhaps some more tips on installing Java.

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