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  • 05:01
    Hoxbro closed #5303
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    maximlt opened #3529
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    maximlt on daterangeslider_value_throttled_param

    value_throttled is also a DateR… (compare)

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    codecov[bot] commented #3528
  • May 16 23:59
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  • May 16 23:31

    philippjfr on v0.13.1a7

    (compare)

  • May 16 23:31

    philippjfr on master

    Bump panel.js to 0.13.1a7 (compare)

Marc Skov Madsen
@MarcSkovMadsen
And the search function is just so awesomely fast and responsive. Check it out in the video here https://twitter.com/MarcSkovMadsen/status/1308801288830963714?s=20
Maybe HoloViz could use a gallery like that across all the different galleries for hvPlot, HoloViews, Panel, .....?
Marc Skov Madsen
@MarcSkovMadsen
:-) Why do I have to navigate to the galleries in each of the sites if I don't know which or if I'm really trying to use several libraries together. I actually feel on the discourse there increasingly are questions on how to use the different libraries in combination or where the answer really is based an having a combined understanding. This combined understanding is not something many have (I claim) and something that the existing documentation does not focus on.
James A. Bednar
@jbednar
examples.pyviz.org is meant to be that gallery that crosses projects, but the more the merrier!
I don't know which header image that Datashader shot is, but I suspect it's from someone other than me, as that's not one of my usual colormaps. But at least I don't have any objection!
Marc Skov Madsen
@MarcSkovMadsen
You can try out the gallery here https://awesome-panel.org/gallery. It loads a bit slow. I need to find out why. And then I need to fill in the data.
Philipp Rudiger
@philippjfr
Ugh sorry @rsignell-usgs should have pinged you. Was a bit rushed before taking two days off. Something in the PyPI build chain broke which I wasn't able to resolve in time.
@MarcSkovMadsen Your gallery looks great. Could you make an issue with suggestions on how to improve the main Panel gallery?
Kim Pevey
@kcpevey

Has anyone else seen this bug?

VM10348:52 Python failed with the following traceback: 
/Users/kcp/.conda/envs/lbm/lib/python3.8/site-packages/pyviz_comms/__init__.py _handle_msg L316
/Users/kcp/.conda/envs/lbm/lib/python3.8/site-packages/holoviews/plotting/bokeh/callbacks.py on_msg L146
/Users/kcp/.conda/envs/lbm/lib/python3.8/site-packages/holoviews/plotting/bokeh/callbacks.py _process_msg L1203
/Users/kcp/.conda/envs/lbm/lib/python3.8/site-packages/holoviews/plotting/bokeh/callbacks.py <listcomp> L1203
    ValueError: invalid literal for int() with base 10: 'dtype'

It's cropped up in my code this week. I thought I had it narrowed down and reported it here holoviz/holoviews#4626 but now I noticed it on a completely different plot unrelated to annotators.

Philipp Rudiger
@philippjfr
Which HoloViews version? 1.13.4?
Kim Pevey
@kcpevey
'1.13.4'
Marc Skov Madsen
@MarcSkovMadsen
@philippjfr . I've created the FR for a better index/ gallery page here holoviz/panel#1601
sameerCoder
@sameerCoder
How we can save panel plot/holoview plot/bokeh plot in geotiff format?
Thank you
Marc Skov Madsen
@MarcSkovMadsen
Hi @sameerCoder . I can see you have posted on Discourse https://discourse.holoviz.org/t/how-we-cann-save-panel-plot-holoview-plot-bokeh-plot-in-geotiff-format/1234. Thanks. That is the right place for questions.
Philipp Rudiger
@philippjfr
@sameerCoder I really don't know what it would mean to save a plot to GeoTIFF really.
Kim Pevey
@kcpevey

I'm dealing with a memory leak from hv.RGB. I've traced it back to the matplotlib backend (even though I'm running hv with the bokeh backend). It's possibly related to this mpl issue matplotlib/matplotlib#8519 . It may be related to this issue as well which has been labeled a bug holoviz/hvplot#501 .

Is there a workaround for NOT using mpl as the backend for hv.RGB?

Philipp Rudiger
@philippjfr
I don't know why RGB is involved at all for RGB
Kim Pevey
@kcpevey
do you mean mpl?
Philipp Rudiger
@philippjfr
Yes, sorry :laughing:
Kim Pevey
@kcpevey
yeah I don't know why it's dropping to mpl image.py as the last step. I'm running a notebook that has the bokeh ext loaded.
So it should be able to stay with bokeh?
Philipp Rudiger
@philippjfr
What is image.py?
Kim Pevey
@kcpevey
some file in mpl. I'll look it up.

This is the tracemalloc:

[ Top 10 ]
/Users/kcp/miniconda3/envs/lbm/lib/python3.8/site-packages/matplotlib/image.py:1663: size=402 MiB, count=6, average=66.9 MiB
/Users/kcp/miniconda3/envs/lbm/lib/python3.8/posixpath.py:368: size=445 KiB, count=3417, average=133 B
/Users/kcp/miniconda3/envs/lbm/lib/python3.8/linecache.py:137: size=336 KiB, count=3244, average=106 B
/Users/kcp/miniconda3/envs/lbm/lib/python3.8/inspect.py:753: size=144 KiB, count=1, average=144 KiB
/Users/kcp/miniconda3/envs/lbm/lib/python3.8/inspect.py:750: size=144 KiB, count=1, average=144 KiB
/Users/kcp/miniconda3/envs/lbm/lib/python3.8/site-packages/IPython/core/builtin_trap.py:63: size=9248 B, count=1, average=9248 B
/Users/kcp/miniconda3/envs/lbm/lib/python3.8/site-packages/IPython/core/compilerop.py:101: size=5446 B, count=96, average=57 B
/Users/kcp/miniconda3/envs/lbm/lib/python3.8/json/decoder.py:353: size=3479 B, count=44, average=79 B
/Users/kcp/miniconda3/envs/lbm/lib/python3.8/site-packages/param/parameterized.py:271: size=2184 B, count=13, average=168 B
/Users/kcp/miniconda3/envs/lbm/lib/python3.8/site-packages/tornado/gen.py:191: size=2088 B, count=8, average=261 B

With the bokeh ext loaded

Philipp Rudiger
@philippjfr
I can't tell you really, something must explicitly invoking matplotlib to make that happen.
Kim Pevey
@kcpevey
img = hv.RGB.load_image(path) was the call
Philipp Rudiger
@philippjfr
Ah okay.
Surprised plt.imread would create a figure.
Kim Pevey
@kcpevey
maybe it's just using this function https://github.com/matplotlib/matplotlib/blob/master/lib/matplotlib/image.py#L1642 to create the array?
Philipp Rudiger
@philippjfr
I'd suggest replacing it with a PIL based solution.
And then make a PR to HoloViews to use that in RGB.load_image.
Right I have no idea why that would leak memory.
Kim Pevey
@kcpevey

I also tried

from PIL import Image
img = hv.RGB(np.array(Image.open(path)))

with the same results

Philipp Rudiger
@philippjfr
Also tracemalloc only checks memory allocations, not leakages.
Kim Pevey
@kcpevey
still drops to mpl
Right. so when I run the above, I can watch my machine memory increase incrementally every ttime and it never drops until I shutdown the kernel
Philipp Rudiger
@philippjfr
Does an explicit gc.collect() reclaim the memory?
Kim Pevey
@kcpevey
no
Philipp Rudiger
@philippjfr

So repeatedly running:

from PIL import Image
img = hv.RGB(np.array(Image.open(path)))

increases memory usage?

Kim Pevey
@kcpevey
yes
Philipp Rudiger
@philippjfr
And this does not?
from PIL import Image
img = np.array(Image.open(path))
Kim Pevey
@kcpevey
good question. let me check
Philipp Rudiger
@philippjfr

Use this instead:

f = open(filename, 'rb')
image = Image.open(f)
image.load()
f.close()

Pillow is leaking the file pointer

Or rather use:
with open(filename, 'rb') as:
    image = np.array(Image.open(f))
And then please make a PR to HoloViews to use PIL in the same way in HoloViews.
(Replacing the imread)
Kim Pevey
@kcpevey
Hmm. I'll have to think though how I can implement this in my panel pipeline as well.