I have two raster images which are the spatial data. I want to display those images or we call the spatial map with the same colour scale as Figure 1. As shown in Figure 1, we can see that the colour scale at A and B are the same. So, how we do it?
In ArcGIS, go to the first spatial map (RCP 85 2080 2.tif) that you want their scale as the reference scale. Then, right-click and select properties.
In the layer properties, select Symbology (Figure 2, Step 1). Then, select Classified. Pick your color ramp that you want. For this case, I select 10 classes. After that, click Classify as shown in Figure 2 at Step 2.
In the Classification menu, change the classification method from Natural Breaks (Jenks) to Manual as shown in Figure 2 at Step 3. Then, click the Ok button.
Select our second spatial map (RCP 85 2050 2.tif). Then, right-click and select properties.
In the layer properties, select Symbology (Figure 2, Step 1). Select Import as shown in Figure 3 at Step 4.
Menu of Import Symbology will display. Then, select layer: RCP 85 2080 2.tif, which our first spatial map as shown in Figure 3 at Step 5. After that, click Ok (Figure 3, Step 6). Lastly, click Ok to exit the layer properties.
Therefore, both of your spatial maps will have the same colour scale as shown in Figure 4.