epca | Exploratory Principal Component Analysis | Data Mining library

by fchen365 R Version: Current License: GPL-3.0

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kandi X-RAY | epca Summary

epca is a R library typically used in Data Processing, Data Mining, Pytorch applications. epca has no bugs, it has no vulnerabilities, it has a Strong Copyleft License and it has low support. You can download it from GitHub.

Exploratory Principal Component Analysis

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Quality

Security

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Support

epca has a low active ecosystem.

It has 9 star(s) with 1 fork(s). There are 2 watchers for this library.

It had no major release in the last 6 months.

There are 2 open issues and 0 have been closed. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of epca is current.

Quality

epca has no bugs reported.

Security

epca has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

epca is licensed under the GPL-3.0 License. This license is Strong Copyleft.

Strong Copyleft licenses enforce sharing, and you can use them when creating open source projects.

Reuse

epca releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

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epca Key Features

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epca Examples and Code Snippets

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Community Discussions

Trending Discussions on epca

Shiny downloadButton() and downloadHandler() 500 Error

QUESTION

Shiny downloadButton() and downloadHandler() 500 Error

Asked 2017-Feb-16 at 22:18

I have developed a Shiny Dashboard, I have several data frames that get imported through reactive file readers, etc.. I have also added a "Generate PDF" button, using downloadButton() in my ui.R code. My server.R code implements the downloadHandler() to handle that request.

On my Windows desktop this all works perfectly. I want this to run on a Linux server I have setup. I had to modify some paths, of course, and Shiny Server runs as root on this box. When I click the "Generate PDF" button on site running on the Linux server, I get an HTTP 500 error almost instantly. I have manually compiled the pdfReport.Rmd file on the Linux server myself and it runs just fine.

I am guessing one of two things:

Somehow the data isn't getting passed the same way on the Linux box as it does on the Windows desktop. This is probably not likely, but it is a possibility.
I have something wrong with my paths so when the temp files get written to start generating the PDF, the system doesn't have the ability or a path doesn't exist to write the file. Possibly my downloadHandler() code is malformed in some way. I think this is a higher possibility than the #1.

Here is my code for the downloadHandler():

...

ANSWER

Answered 2017-Feb-16 at 22:18

Ok - after much troubleshooting, I figured out that some of the files I had in the shiny webroot that were dependencies for the main pdfReport.Rmd file weren't being seen, since the code copied the report to a temp directory.

Because I didn't want to copy all of the files from my webroot over to the temp, I decided to make the report render within the webroot itself. For me, this isn't a big deal since my shiny app is running as root anyway.

I will fix this now that I have it working, basically my fix will be to do the following:

Make the service run as a normal user
Rather than copy of the files that the report depends on, I will have to statically reference them in the report code.

I apologize for all of those who may have read this and are working on it. My fix was to the code above was the following:

Source https://stackoverflow.com/questions/42282524

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