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Matteo Niccoli

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14 Nov 2014 Screenshot Perceptually improved colormaps 7 perceptual colormaps with rainbow-like colors and 1 with heat colors Author: Matteo Niccoli color, colormap, data, graphics, display, plot 114 24
  • 5.0
5.0 | 10 ratings
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11 Dec 2014 Perceptually improved colormaps 7 perceptual colormaps with rainbow-like colors and 1 with heat colors Author: Matteo Niccoli

HI MArtin. Thanks for the positive feedback. As for the error message, you are the first person to report it for pmkmp. Perhaps the 2007 release did not have these functions? It looks like others have encountered the problem and reported it elsewhere: http://www.nitrc.org/forum/forum.php?thread_id=3703&forum_id=3259

14 Nov 2014 colormapline - color-changing 2D or 3D line Plot a 2D or 3D line using a specified colormap. Author: Matthias Hunstig

To get the lightness for jet in my previous snippet, I used this code:
lab2 = colorspace('RGB->Lab',jet(256));
and this submission:
http://www.mathworks.com/matlabcentral/fileexchange/28790-colorspace-transformations

14 Nov 2014 colormapline - color-changing 2D or 3D line Plot a 2D or 3D line using a specified colormap. Author: Matthias Hunstig

Works well for me. For eample I used this code:
figure;
j=jet(256);
h=colormapline(1:1:256,lab2(:,1),[],j);
set(h,'linewidth',2.5);
to get the first figure in this post:
http://mycarta.wordpress.com/2014/11/13/new-rainbow-colormap-sawthoot-shaped-lightness-profile/

29 Oct 2014 expandAxes Click any axes to expand it in a separate figure. Right-click expanded axes to export contents! Author: Brett Shoelson

24 Oct 2014 DEM: Shaded relief image plot (digital elevation model) Pretty shaded relief map as flat image. Author: Fran├žois Beauducel

Comments and Ratings on Matteo Niccoli's Files View all
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11 Dec 2014 Perceptually improved colormaps 7 perceptual colormaps with rainbow-like colors and 1 with heat colors Author: Matteo Niccoli Matteo Niccoli

HI MArtin. Thanks for the positive feedback. As for the error message, you are the first person to report it for pmkmp. Perhaps the 2007 release did not have these functions? It looks like others have encountered the problem and reported it elsewhere: http://www.nitrc.org/forum/forum.php?thread_id=3703&forum_id=3259

10 Dec 2014 Perceptually improved colormaps 7 perceptual colormaps with rainbow-like colors and 1 with heat colors Author: Matteo Niccoli Martin Asmat

Very nice colormap. Thank you for the detailed info and references. When trying to use the code in matlab 2007 (Windows 7),I received the following error msg:
"Undefined function or method 'narginchk' for input arguments of type 'double'.

Error in ==> pmkmp at 332
narginchk(0,2)"

It is interesting that I didn't see any of that when running it in matlab 2014b (in ubuntu) though. After commenting the lines corresponding to :
"narginchk" and "nargoutchk", the code seemed to work fine.

16 Jul 2014 Perceptually improved colormaps 7 perceptual colormaps with rainbow-like colors and 1 with heat colors Author: Matteo Niccoli Matteo Niccoli

Hi Timothy, thank you for your feedback. And for the suggestion! I just got started with github and am building some tutorials on this in Python (you can check it at github.com/mycarta), but it did not occurr to me to upload the Matlab code as well. Great idea, I'll get to it as soon as I'm done with the Python tutorials.

16 Jul 2014 Perceptually improved colormaps 7 perceptual colormaps with rainbow-like colors and 1 with heat colors Author: Matteo Niccoli Timothy

Fantastic colormap! Have you though of placing your code and progress on github as well? That way we can fork, patch, or just update our copies very easily. Thank you again.

06 Jul 2014 Perceptually improved colormaps 7 perceptual colormaps with rainbow-like colors and 1 with heat colors Author: Matteo Niccoli Matteo Niccoli

Hi Jakob, thanks for the positive feedback and for pointing that out. I am working on some additional colormaps so when I add those I will also fix the interp1 commands.

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