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Fast help with Python program

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Subject: Fast help with Python program
From: arakelthedragon@gmail.com (Arak Rachael)
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by: Arak Rachael - Thu, 29 Jul 2021 10:10 UTC

Re: Fast help with Python program

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From: wlfraed@ix.netcom.com (Dennis Lee Bieber)
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Subject: Re: Fast help with Python program
Date: Thu, 29 Jul 2021 11:19:17 -0400
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by: Dennis Lee Bieber - Thu, 29 Jul 2021 15:19 UTC

On Thu, 29 Jul 2021 03:10:50 -0700 (PDT), Arak Rachael
<arakelthedragon@gmail.com> declaimed the following:

>
>And I also don't get how to cluster the colors based on how many colors there are in the second array from get_unique_colors(img).
>
>https://www.dropbox.com/s/ifvecwb5c0iy2pa/test_scripts.py?dl=0

And just what have you tried? Showing us the "arrays"* as printed by
the debug lines in your code would perhaps help.

COMMENT:

Lines 40-50 are a bit of a mess...

Where is "n" defined in lines 46-48 (I acknowledge those are just dummy
lines in your attempt at solving this). For that loop, you are only
generating ONE data point, and then calling for a scatter plot of one value
-- then repeating for the next value (and there are only TWO cycles in the
loop, one for each marker).

The commented out lines (40-42) reference "color_list", but again,
there is no such entity in the previous lines. You are also cycling over
that (missing) list three times, just to extract one part at a time.
Consider:

>>> rgb = [ (1, 2, 3),
.... (3, 1, 1),
.... (4, 2, 3),
.... (2, 4, 1) ]
>>>
>>> rgb
[(1, 2, 3), (3, 1, 1), (4, 2, 3), (2, 4, 1)]
>>> rsgsbs = [t for t in zip(*rgb)]
>>> rsgsbs
[(1, 3, 4, 2), (2, 1, 2, 4), (3, 1, 3, 1)]
>>>

You now have a list of three tuples, one each for R, G, B

Since R/G/B already determine the location of a point in 3D space (I
presume 0..255 ranging, and not 0.0..1.0, just to avoid clustering
everything in a very thin layer of a 3D plot) -- what did you intend to do
with the "count" value? Change the marker based upon the count?
Unfortunately, the documentation doesn't seem to support a dynamic marker
shape (ie; accept a list of markers to be used). You CAN change the marker
SIZE (but you'll want to scale the counts as the size is points**2, count
of 1 would be 1 point, but a count of 10 would make a 100 point blot). You
could create a color map (cmap=) and provide the count list (c=), set norm=
to some subclass of Normalize (or normalize the range of count into
0.0..1.0 beforehand).

* Your usage of "array" seems rather ambiguous... The comment at line 43
is particular. It sounds to me that what you have is a matrix of 2xN
elements; one row having the RGB colors, the other row having the
corresponding count. If so...

colors = clist[0]
count = clist[1]
rgb = [t for t in zip(* colors)]
xs = rgb[0]
ys = rgb[1]
zs = rgb[2]

--
Wulfraed Dennis Lee Bieber AF6VN
wlfraed@ix.netcom.com http://wlfraed.microdiversity.freeddns.org/

Subject	Author
Fast help with Python program	Arak Rachael
Re: Fast help with Python program	Dennis Lee Bieber