Join GitHub today
GitHub is home to over 31 million developers working together to host and review code, manage projects, and build software together.Sign up
Datashader min_alpha not in Holoviews #2108
Hi, I am new both at Holoviews and Datashader. But I tried to get the same plot that I get using datashader using Holoviews but it is being impossible because the datashade function does not have this min_alpha parameter that is present if I only use datashader function tf.shade.
It is important, since as I zoom in I get only a few bins really intense which mask almost the rest of the image.
Code in datashader (part of if):
def create_image(x_range, y_range, w=plot_width, h=plot_height):
p = base_plot(background_fill_color=background)
Code using Holoviews ():
Thanks for reporting this.
We should expose as much functionality from datashader as we can so I'm assigning this issue to the next milestone. I don't expect it will take too much effort to support. @philippjfr Can you confirm that there is no easy way to set
Yes, I have read through the datashader.py script and at some point it transforms the RGBA to RGB (as I understood), therefore, there isn't any alpha or min_alpha parameter to optimize. Which practically means that the plot is the same as the equivalent to using datashader with min_alpha = 0.
I have also tried different things, but nothing solved the problem.
Thank you for your time