Smoothen maps, get rid of double colors

bpostlethwaite · Jul 25, 2017 · 2f1fe00 · 2f1fe00
1 parent ba79a78
commit 2f1fe00
Show file tree

Hide file tree

Showing 3 changed files with 5 additions and 3 deletions.
diff --git a/colormaps.png b/colormaps.png
diff --git a/example.js b/example.js
@@ -23,11 +23,9 @@ function drawColorMaps (colormap, name, height) {
     /*
      * Build up the color ranges and add text
      */
-
     for (var j = 0; j < n; j++) {
         c.fillStyle = colormap[j];      // start ind at index 0
         c.fillRect(j*10, height, 10, 40);
-
     }
     c.fillStyle = '#262626';
     c.font = '16px Helvetica';

diff --git a/index.js b/index.js
@@ -28,7 +28,7 @@ function createColormap (spec) {
 
     if ( !isPlainObject(spec) ) spec = {};
 
-    nshades = spec.nshades || 72;
+    nshades = (spec.nshades || 72) - 1;
     format = spec.format || 'hex';
 
     colormap = spec.colormap;
@@ -116,6 +116,10 @@ function createColormap (spec) {
             ])
         }
     }
+
+    //add 1 step as last value
+    colors.push(cmap[cmap.length - 1].rgb.concat(alpha[1]))
+
     if (format === 'hex') colors = colors.map( rgb2hex );
     if (format === 'rgbaString') colors = colors.map( rgbaStr );