Last bit of tests + codecov.io badge on top-level readme

+ Fine tuned tests to bring to the edge the global coverage

- Error thrown by hex2rgb for invalid range converted in handled message

- Error thrown by palette.crameri for invalid name converted as well

+ Codecov badge in README

> This commit should release...

.test/test_X11.m

@@ -8,6 +8,8 @@ function X11_colors()
     close all
     clear
 
+    rgb.X11 % print help
+
     names = rgb.X11('list');
     disp('Are colornames unchanged?')
     assert(isequal(names,reference_names),'X11 colornames have changed')

.test/test_all_docstrings.m

@@ -17,7 +17,7 @@ function all_docstrings()
     disp '...done!'
 
     disp X11
-    X11('navyblue') 
+    X11("navyblue") 
     X11('SpringGreen','CornflowerBlue','sapphire','radioactive green')
     x = -pi:.1:pi;
     y = cos(x);
@@ -33,7 +33,7 @@ function all_docstrings()
     disp '...done!'
 
     disp xkcd
-    xkcd('baby blue') 
+    xkcd("baby blue") 
     xkcd('wintergreen','sunflower yellow','sapphire','radioactive green')
     x = -pi:.1:pi;
     y = cos(x);
@@ -60,6 +60,7 @@ function all_docstrings()
     view_color({'pyplot1',"pyplot2",'pyplot3'},'vbars')
     view_color(palette.tab20(16),'hbars')
     view_color(palette.cubehelix(36))
+    view_color(palette.cubehelix(36),'square') % wrong form factor -> print help
     close all; clear
     disp '...done!'
 
@@ -74,11 +75,13 @@ function all_docstrings()
     disp '...done!'
 
     disp hex2rgb
+    hex2rgb % print help :)
     rgb = [0.2000,0.3020,0.4000];
     assert(norm(rgb-hex2rgb('#334D66'))<1e10)
     assert(norm(rgb-hex2rgb('334D66'))<1e10)
     RGB = [51,77,102];
-    assert(norm(rgb-hex2rgb('#334D66',256))<1e10)
+    assert(norm(RGB-hex2rgb('#334D66',256))<1e10)
+    hex2rgb('#334D66',250) % Error handling :)
     hexmatrix = ['#334D66';'#8099B3';'#CC9933';'#3333E6'];
     hexchcell = {'#334D66';'#8099B3';'#CC9933';'#3333E6'};
     hexstrarr = ["#334D66","#8099B3","#CC9933","#3333E6"]; 
@@ -88,6 +91,7 @@ function all_docstrings()
     disp '...done!'
 
     disp rgb2hex
+    hex2rgb % print help :)
     hex = '#00FF00';
     rgb = [0 1 0];
     RGB = [0 255 0];
@@ -153,7 +157,8 @@ function all_docstrings()
     close
     [X,Y,Z] = peaks(30);
     surfc(X,Y,Z+4)
-    palette.crameri('bam','pivot',4)
+    palette.crameri('Bam','pivot',4)
+    palette.crameri('sBam') % Error handling :)
     preset_palette(@palette.crameri,'oleron'); % preselect the map.
     cmap = palette.crameri('-oleron');
     assert(isequal(cmap(end:-1:1,:),preset_palette))
@@ -197,8 +202,11 @@ function all_docstrings()
     end
 
     disp paletteshow
+    paletteshow.brewer('show') % Error handling :)
     paletteshow.brewer
+    paletteshow.cmocean('show') % Error handling :)
     paletteshow.cmocean
+    paletteshow.crameri('show') % Error handling :)
     paletteshow.crameri
     %paletteshow.matplotlib TODO!
     close all force % brewer is nasty

.test/test_color_order.m

@@ -8,8 +8,10 @@ function color_order()
     close all
     clear
 
-    N = 7;
-
+    set_colororder % prints help
+    N = 7
+    set_colororder show
+    N = N + 2
     set_colororder('show',N)
 
     disp('>> All good!')

.test/test_default_palettes.m

@@ -8,8 +8,15 @@ function default_palettes()
     close all
     clear
 
+    set_palette % prints help
+
+    disp 'default N'
     set_palette show
 
+    N = 3;
+    disp 'N = 3'
+    set_palette('show',N)
+
     disp('>> All good!')
     disp('------------')
 

.test/test_string_lookup.m

@@ -2,7 +2,7 @@
 
 function strlook()
 
-    disp('TESTING smart string lookup [+rgb;get_palette]')
+    disp('TESTING smart string lookup [+rgb;get_palette;set_palette;set_colororder]')
 
     colorlab.enter
     close all
@@ -12,6 +12,8 @@ function strlook()
 
     get_palette virridis;
 
+    set_palette magda
+
     set_colororder tab;
 
     disp('>> All good!')

.test/test_xkcd.m

@@ -8,6 +8,8 @@ function xkcd_colors()
     close all
     clear
 
+    rgb.xkcd % print help
+
     names = rgb.xkcd('list');
     disp('Are colornames unchanged?')
     assert(isequal(names,reference_names),'xkcd colornames have changed')

README.md

@@ -7,6 +7,7 @@
 [![R2021a](https://github.com/bellomia/colorlab/actions/workflows/R2021a.yaml/badge.svg)](https://github.com/bellomia/colorlab/actions/workflows/R2021a.yaml)
 [![R2021b](https://github.com/bellomia/colorlab/actions/workflows/R2021b.yaml/badge.svg)](https://github.com/bellomia/colorlab/actions/workflows/R2021b.yaml)
 [![R2022a](https://github.com/bellomia/colorlab/actions/workflows/R2022a.yaml/badge.svg)](https://github.com/bellomia/colorlab/actions/workflows/R2022a.yaml)
+[![codecov](https://codecov.io/gh/bellomia/colorlab/branch/master/graph/badge.svg?token=DPZTI61U97)](https://codecov.io/gh/bellomia/colorlab)
 
 For a long time Matlab has excelled for its plotting features, at a point where [matplotlib](https://matplotlib.org), arguably the most popular open-source plotting library nowadays, has started as an explicit clone of such functionality and still today keeps a strong influence. In recent years, though, one important aspect has greatly evolved in the plotting business: color management. So we had [Dave Green's 2011 paper](https://astron-soc.in/bulletin/11June/289392011.pdf) introducing a new, revolutionary, colormap with the aim of representing astronomical data with monotonically increasing brightness (and so black-and-white print friendliness); then in 2015 even better advances by the SciPy team, enriching matplotib with beautiful _perceptually uniform_ colormaps ([viridis, magma, plasma](https://www.youtube.com/watch?v=xAoljeRJ3lU) and the [domain-specific ones for oceanography: cmocean](https://youtu.be/XjHzLUnHeM0)). Meanwhile the results of a totally crazy and marvelous at the same time [2010 color survey](https://blog.xkcd.com/2010/05/03/color-survey-results/) made by the great xkcd webcomic, have gained more and more popularity, in fact challenging the old and trusted [X11 colorset](https://en.wikipedia.org/wiki/X11_color_names). Nowadays it's embedded again in [matplotlib](https://matplotlib.org/stable/tutorials/colors/colors.html) and available in [LaTeX](https://www.ctan.org/pkg/xkcdcolors), in [R](https://cran.r-project.org/web/packages/xkcdcolors/), and [Julia](https://github.com/JuliaGraphics/NamedColors.jl).
 

brewer/+paletteshow/brewer.m

@@ -1,4 +1,4 @@
-function brewer()
+function brewer(varargin)
 % Simple plot of all ColorBrewer colorscheme nodes in one static figure.
 %
 % (c) 2014-2022 Stephen Cobeldick, 2022 Gabriele Bellomia (package adaptation)
@@ -9,6 +9,10 @@ function brewer()
 % See also 	PALETTE PALETTEDITOR PALETTESHOW CUBEHELIX MAXDISTCOLOR
 % LBMAP PARULA LINES RGBPLOT COLORMAP COLORBAR PLOT PLOT3 AXES SET
 
+if nargin > 0
+			fprintf(2,'Warning: you might want to call palette.brewer instead.\n');
+end
+
 [mcs,nmn,pyt] = palette.brewer('list');
 %
 persistent cbh axh

colortools/hex2rgb.m

@@ -105,7 +105,8 @@
             rgb = reshape(sscanf(hex.','%2x'),3,[]).';
 
         otherwise
-            error('Range must be either "1" to scale from 0 to 1 or "256" to scale from 0 to 255.')
+            disp('ERROR: Range must be either "1" to scale from 0 to 1 or "256" to scale from 0 to 255.')
+            return
     end
 
     if isempty(rgb)

crameri/+palette/crameri.m

@@ -116,8 +116,9 @@
        S = load('CrameriColourMaps.mat',ColormapName); 
        cmap = S.(ColormapName); 
    catch
-       error(['Unknown colormap name ''',ColormapName,...
-       '''. Try typing paletteshow.crameri to check the options and try again.'])
+       fprintf(2,['ERROR: Unknown colormap name ''',ColormapName,...
+            '''. Try typing paletteshow.crameri to check the options and try again.\n'])
+       return
    end
 end