Changeset 5163 for cows/branches

Timestamp:

02/04/09 10:40:08 (12 years ago)

Author:

spascoe

Message:

Copying to personal branch for some refactoring

Location:

cows/branches/cows-spascoe

Files:

• . (copied) (copied from cows/trunk)
• cows/pylons/project_templates/cows_server/+package+/public/demo.js (modified) (2 diffs)
• cows/pylons/project_templates/cows_server/+package+/templates/demo.html (modified) (1 diff)
• cows/service/imps/csmlbackend/wms_csmllayer.py (modified) (3 diffs)

cows/branches/cows-spascoe/cows/pylons/project_templates/cows_server/+package+/public/demo.js

@@ -48 +48 @@
     map.addLayer(dataLayer);
 
+    var legendURL = dataLayer.url + '?REQUEST=GetLegend&LAYERS=' + 
+        dataLayer.params.LAYERS;
+
+    var legend = document.getElementById('legend');
+    legend.innerHTML = '<img src="' + legendURL + '"/>';
+
 }
 
@@ -63 +69 @@
         params: {
             layers: layer,
-            request: 'GetContext', format: 'application/json',
+            request: 'GetContext', format: 'application/json'
         },
         async: false

cows/branches/cows-spascoe/cows/pylons/project_templates/cows_server/+package+/templates/demo.html

@@ -43 +43 @@
   
 
-  <div id="map"/>
-  <div id="panel"/>
+  <table>
+    <tr>
+      <td>
+        <div id="map"/>
+      </td>
+      <td>
+        <div id="legend"/>
+      </td>
+      <td>
+        <div id="panel"/>
+      </td>
+    </tr>
+  </table>
 
   <h2>Features Available</h2>

cows/branches/cows-spascoe/cows/service/imps/csmlbackend/wms_csmllayer.py

@@ -12 +12 @@
 import os, string
 import csml
+import numpy
+from cStringIO import StringIO
 try:
     import cdms2 as cdms
@@ -25 +27 @@
 log = logging.getLogger(__name__)
 
+from matplotlib.backends.backend_agg import FigureCanvasAgg as FigureCanvas
+from matplotlib.figure import Figure
+from matplotlib.colorbar import ColorbarBase
 
 from cows.service.wms_iface import IwmsLayer, IwmsDimension, IwmsLayerSlab
@@ -261 +266 @@
 
 
+    def getLegendImage(self, orientation='vertical', renderOpts={}):
+        if 'vert' in orientation:
+            figsize = (1, 3.2)
+            rect = (0.05, 0.05, 0.4, 0.9)
+        else:
+            figsize = (4.1, 1)
+            rect = (0.05, 0.55, 0.9, 0.4)
+
+        #!TODO: remove these dummy values
+        minValue, maxValue = (0, 100)
+        cmap = cm.get_cmap(config['colourmap'])
+
+        fig = Figure(figsize=figsize, dpi=100, facecolor='w')
+
+        # If there is no minValue/maxValue don't display a colourbar
+        # but display a warning.  Any colourbar would be a complete
+        # guess unless we find the actual range from the slab.
+        if minValue is None:
+            fig.text(0.5, 0.3, 'NO RANGE SET!\n(%s)' % self.units,
+                     multialignment='center',
+                     rotation=orientation)
+        else:
+            ax = fig.add_axes(rect)
+            cb = ColorbarBase(ax, cmap=cmap, 
+                              orientation=orientation)
+            if 'vert' in orientation:
+                ax.set_ylabel(self.units)
+                ax.yaxis.set_data_interval(minValue, maxValue)
+            else:
+                ax.set_xlabel(self.units)
+                ax.xaxis.set_data_interval(minValue, maxValue)
+
+        c = FigureCanvas(fig)
+        c.draw()
+        buf = StringIO()
+        c.print_png(buf)
+        buf.seek(0)
+        img = Image.open(buf)
+
+        return img
+
+
+
+
 class CSMLwmsDimension(IwmsDimension):
     """