Test example from HTML 5 Canvas Backend

Hello,

I run the test.py example from the folder mplh5canvas/test. This example generated in the output folder 2 html pages (test.html and test_rendered.html) and also 2 images (filename.png and filename.svg). The test.html page is displayed ok, but when I open the test_rendered.html page the images from the column “H5 Canvas (PNG from Chrome 4.0 OSX)” are not displayed.

After I studied the source code of the test.py example I saw the following line:

(line 85) thtml += “

” % (“h5canvas_” + png_filename, w, h)

Now the question is: What is supposed to be “h5canvas_” + png_filename? There is no image generated with this name in the output folder.

The HTML 5 Canvas Backend was downloaded from here: http://code.google.com/p/mplh5canvas/downloads/list

Thanks!

Hey,

The test_rendered.html file probably should have been removed from the
release version. The idea behind this was to compare a PNG of the
browser rendered HTML5 plot with the standard PNG backend. (So users
without HTML5 support could see how the plugin performed).

These rendered PNG's are generated from the main test.html page by
running the rec.py receiver, and using the 'Connect' and 'Put images
to server' buttons on the bottom of test.html

Unfortunately the connect method uses a hardcoded IP address for the
WebSocket and so will need to be changed if you wanted to get this
working.

In short, as long as test.html produces three columns of plots (HTML5,
PNG and SVG), things are working fine.

I apologise for the slipshod release that left this code in :slight_smile:

Cheers,

Simon Ratcliffe

···

On Fri, Jan 14, 2011 at 11:02 AM, Akad Demo <akaddemo@...149...> wrote:

Hello,

I run the test.py example from the folder mplh5canvas/test. This example
generated in the output folder 2 html pages (test.html and
test_rendered.html) and also 2 images (filename.png and filename.svg). The
test.html page is displayed ok, but when I open the test_rendered.html page
the images from the column "H5 Canvas (PNG from Chrome 4.0 OSX)" are not
displayed.

After I studied the source code of the test.py example I saw the following
line:

(line 85) thtml += "<td><img src='%s' width='%dpx' height='%dpx' />" %
("h5canvas_" + png_filename, w, h)

Now the question is: What is supposed to be "h5canvas_" + png_filename?
There is no image generated with this name in the output folder.

The HTML 5 Canvas Backend was downloaded from here:
http://code.google.com/p/mplh5canvas/downloads/list

Thanks!

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