arcgis-10.3arcgis-desktopcolor ramplegend
I'm using ArcMap 10.3.1.
Is there a way to show, on the legend, just the color ramp as a single patch instead of with each group of values?
I don't really need to show those values on the legend.
This is what it looks like now:
I would prefer to have it look like the ramp in the properties window and somehow note that the green area is less concern, while red is more concern.
Such as this:
It's a slight fudge but try setting Width and Height on the Override default patch size part of the Legend Item properties to be very small but not zero i.e. 0.001. In my test it looks like the patch is either not there at all, or is too small to see. If you set to 0 then patches return to original size.
Update: QGIS 3.18 now has built in support for gradient color band legend items, so the previous workarounds are no longer necessary!
For earlier versions:
Another option is to add a rectangle shape to the composition, then style the rectangle using a gradient fill with the same color ramp as your raster. This can be done directly in QGIS, no image editing or html required.
Best Answer
The way I've done it in the past is to add a Raster to my map, symbolise it using the Color Ramp I want, and turn the layer off in the TOC. You can make the legend show for layers that are turned off.
Raster with Color Ramp in TOC:
Legend shows layers that are not visible:
You may need to resize the symbol in the legend. You can do this by going into Legend Properties and opening the Legend Item properties for the raster layer. Modify the symbol patch height.
End result is a legend showing the color ramp as desired.
You can rename the layer in your TOC to suit, and make your actual layer not show in the legend. You can also remove values to have them not show in the legend. To remove values just click on the value in the TOC, press F2 to rename, and delete the text.