Filtering DAX variable

[Anonymous]

Hi! I have a DAX statement like this :

"VAR _road = RST[road]
VAR _section = RST[section]
VAR _dist = RST[distance]

VAR _COMPARISON = CALCULATE(SUM(RST[edgedropoffdepth]); FILTER(RST; RST[distance] = _dist && RST[road] = _road && RST[section] = _section && RST[runname] = 41)) 

RETURN
RST[edgedropoffdepth] - _COMPARISON"

So basically I have the same road/section/distance and I'd like to compare how the value has changes. Is it somehow possible to but a value for this "VAR _FIRST", if there is no value with desired distances, road, section and runname. So is there a possibility to add somekind of IF statement (or something else).

[Anonymous]

Hello @Anonymous 

Take a look at this article. It contains some great tips for getting your question answered quickly.

 https://community.powerbi.com/t5/Community-Blog/How-to-Get-Your-Question-Answered-Quickly/ba-p/38490

Thanks for being part of the community!