I've check with dev and verified there isn't a way to change the Map Resource height through the UI. The default is currently set to 300. You can change this by perfoming the following steps:
1. Open "<install dir>:\SolarWinds\ipMonitor\internal\js\si_webr.js" in Wordpad
2. Find the following line (search for 300):
var height = _minictx.height ? IPM.ui.topx(_minictx.height) : 300
3. Change from 300 to your desired value and save file.
4. Refresh Dashboard and you should see Map resource update with new size. You may need to play with height value to get what you're looking for...
So I found this file and edited it. However when I click on my dashboard that shows the section for Map: I see no difference. What could I be doing wrong?
I'm using ipMonitor 9.01 and I have confirmed that the changes held.
I would try restarting the ipMonitorSrv service and then when visiting the web page, hitting Ctrl-F5 to force browser refresh. Let me know if this works.