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Log scale graph will be blank if output_backend is webgl #7087
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@fgoinai webgl issues are often the most platform dependent. Can you please provide the additional information about platform and browser version? Additionally, can you make the code sample compelete? It is missing imports. |
Updated |
@fgoinai great thanks for the extra info. Just by way of setting expectations, the previous maintainer of webgl in Bokeh is no longer actively contributing. I think realistically we will need to re-build webgl from the ground up on a more stable base such as ReGL, but that's obviously a big undertaking, and it will probably not happen for some time (definitely not before 1.0, so not until some time next year). For now, if webgl is not working in your particular usage then I can only suggest falling back to standard (default) canvas. |
For the time being Bokeh will fall back to canvas for log plots, but will generate output, not a blank plot. A separate issue will be made to explore when and how webgl can be extended to include log plots. |
I came with a similar problem, my graph is blank even if not using a log scale.. The output is generated, if I used box zoom, the points will be shown.. Here is the sample code: TOOLS="hover,crosshair,pan,wheel_zoom,zoom_in,zoom_out,box_zoom,undo,redo,reset,tap,save,box_select,poly_select,lasso_select," But if I delete " output_backend="webgl" " the graph shows. Thanks a lot. |
ALL software version info (bokeh, python, notebook, OS, browser, any other relevant packages)
OS: Windows 7 Pro SP1 x64
Browser: Firefox Nightly (58.0a1 64bit) and Chrome (61.0.3163.100 64bit)
python==3.5.4 (32bit)
bokeh==0.12.10
Jinja2==2.9.6
MarkupSafe==1.0
numpy==1.13.3
pandas==0.20.3
python-dateutil==2.6.1
pytz==2017.2
PyYAML==3.12
six==1.11.0
tornado==4.5.2
Description of expected behavior and the observed behavior
Log scale grpah will be blank if output_backend is webgl
For svg and canvas backend can display log scale graph normally
Complete, minimal, self-contained example code that reproduces the issue
Stack traceback and/or browser JavaScript console output
no error or warning shown
Screenshots or screencasts of the bug in action
Here
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