Excel - Delete rows if formula returns "" -

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the forumla i'm using is

=if(e7<30,e7,"")

edit:more specifically:

 =if(e7<30,concatenate(a7,b7,c7,"-",text(d7,"hh:mm:ss"),"-",e7),"")

this leaves me lot of blank rows out of 288000 of them. able see cells have returned value together. rather having scroll through of them. i've tried using find , replace method, of course cells still contain formula, not actual return value displays.

sample.

15  mar 2015    00:23:00    100.024          15  mar 2015    00:24:00    90.033           15  mar 2015    00:25:00    80.142           15  mar 2015    00:26:00    70.577           15  mar 2015    00:27:00    61.508           15  mar 2015    00:28:00    53.056           15  mar 2015    00:29:00    45.312           15  mar 2015    00:30:00    38.368           15  mar 2015    00:31:00    32.347           15  mar 2015    00:32:00    27.443          15mar2015-00:32:00-27.443 15  mar 2015    00:33:00    23.934          15mar2015-00:33:00-23.934    15  mar 2015    00:34:00    22.117          15mar2015-00:34:00-22.117 15  mar 2015    00:35:00    22.111          15mar2015-00:35:00-22.111 15  mar 2015    00:36:00    23.695          15mar2015-00:36:00-23.695 15  mar 2015    00:37:00    26.43           15mar2015-00:37:00-26.43 15  mar 2015    00:38:00    29.895          15mar2015-00:38:00-29.895

this better job vba- if want take list , condense have use array function- extremely heavy.. function return rows in condensed way - break workbook 288,000 rows --

ctrl shift enter -> 

   =small(iferror(1/($e$5:$e$20<30)*row($e$5:$e$20),""), rows($f$4:f4))

that's going give row number - write function next referencing results so:

=concatenate(indirect("a"&f5),indirect("b"&f5),indirect("c"&f5),"-",text(d5,"hh:mm:ss"),"-",indirect("e"&5))

index function work too.. vba way solve this.

if inclined on doing formulas may able away creating if statement adjacent dataset so: (formula presumed in column f)

 if(e5<30, max(f$4:f$4)+1, "")

then index formula 

 index(a$5:a$10000, match(rows(l$5:l5), $f$5:$f$10000, 0))

then carry formula over

then run concat on that...

this not recommended tho. let me know if want vba answer instead.


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