Legacy ImageMagick Discussions Archive

Alright,
Thank you very much snibgo. It's work now! I don't know why...

Version: ImageMagick 6.8.8-10 Q16 x86_64 2014-04-10 on Linux Debian

So, with this main file: http://nauton.espace-meteo.com/1.png
With this gradient :
convert -size 13x1 xc: -draw '
fill #FFFFFF rectangle 0,0 13,1
fill #6EA1FF rectangle 1,0 13,1
fill #3770DF rectangle 2,0 13,1
fill #0040BF ...

Which version?

Hi snibgo!

Read back my previous post, I tried with NearestNeighbor ;)
I want... exact same color from my gradient.

See:
http://nauton.espace-meteo.com/bw.png
http://nauton.espace-meteo.com/01ClutAutoNnEx.png

Why the value 4 and 5 are same? whereas on the black&white image not?
My gradient is ...

Hello,

Eternal question, why clut option does'nt work?
I've 13 colors :

c1 = 0
c2 = c1 + 17
c3 = c2 + 17
...
c13 = 255

With this clut gradiant :
convert -size 13x1 xc: -draw '
fill #FFFFFF rectangle 0,0 13,1
fill #6EA1FF rectangle 1,0 13,1
fill #3770DF rectangle 2,0 13,1
fill #0040BF ...

No more solution?

Thank you very much for all help.

Potrace loses values...
Compare potrace.eps and main3.png

Hi Anthony, thank you so much for your help, fmw42 & snibgo also!

Just before you talk to me to try autotrace, potrace and magnify, I had tried ;)
So, I showing my results :

Always with this main file :
http://nauton.espace-meteo.com/main3.png


Method
convert main3.png +repage autotraceIM.svg ...

After thinking, I believe that your last method is too slow for my work...
Rhaa, is there nothing else method?

I just try another main map :
http://nauton.espace-meteo.com/main3.png

There are 3 different colors : 34, 68, 187 (without black color)
If we forget the failing when we have just 187 ...

Yes snibgo, this is exactly the result as I want! :) Thank you.
And now, how built this type of image with many gray values? Because if I've 70 different values, I will have 70 line like that : ( -clone 0 +opaque rgb(68,68,68) -write mpr:X2 -resize "2080x1430^!" -remap mpr:X2 +transparent rgb(68,68 ...

Are you sure? With F5, clean your cache...
http://nauton.espace-meteo.com/main.png is really the true file, with another area at bottom right

Apology, the main.png file was wrong on my server, this is the true file : http://nauton.espace-meteo.com/main.png (F5 if there are only two colors)
My IM version is
Version: ImageMagick 6.8.7-8 Q16 x86_64 2014-02-14 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2014 ImageMagick Studio ...

Yes, but with the last file main.png try...
They are the wrong area (right bottom), because they are others values around the 34,34,34 color. Not on the main.png. Difficult to explain...

This way is interesting, but if my main map is : http://nauton.espace-meteo.com/main.png

With convert main.png +repage -write mpr:XX -filter spline -resize 2080x1430 +dither -remap mpr:XX m.png
I obtain this map
http://nauton.espace-meteo.com/mRemap.png

It's better but I've wrong values around ...

I tried all filters yes.
Spline create others colors :
http://nauton.espace-meteo.com/spline.png

Spline map have smooth borders yes, but now, I'd like colorize this map with only two colors, because on my main image, there are only two colors... (for this example, in true life it's false ;))
If I ...