Yes, you can set the color of the symbols based on a Z column. Part of the color properties includes opacity. So if you want the symbols to be the same color, you can keep the color the same and just adjust the opacity. For example:
- Select the Post layer in the Contents window.
- In the Properties window, click the Symbol tab.
- Under the Symbol Color section, set the Color column to be the Z column for your data (or whatever column you want to base the color properties off of).
- Set the Color method to be Numeric via colormap.
- Then click the (…) button to the right of Symbol colors.
- In the Colormap dialog:
- Select the node on the left (the minimum value) and then click on the color you want the symbol to be.
- Uncheck Apply opacity to ALL nodes and set the opacity you want for the node on the left (the minimum).
- Then click on the node on the right (the maximum value) and then click on the color you want the maximum symbol to be. This could be the same color as the minimum.
- Then set the opacity you want for the node on the right. It could look something like this:
- Click OK and the color and opacity is applied to the symbols.
Updated January 25, 2017