thinning data for graphing

longzoo

New Member
Joined
Nov 4, 2009
Messages
2
I have a data set that is 57000 rows long and i need to graph it! a normal graph in excel 2007 will not print that many rows (nor do i need that many points) How can i thin that data such that i get a point displayed every 10 or 100. ie. i would get 5700 points or 570 points even!
i have been searching for "thin data excel" and get alot of hits on thinning the bars or borders but nothing on thinning the data :(
many thanks in advance
dave
 

Excel Facts

Create a Pivot Table on a Map
If your data has zip codes, postal codes, or city names, select the data and use Insert, 3D Map. (Found to right of chart icons).

nicolewh

Well-known Member
Joined
Aug 7, 2009
Messages
554
Next to the data place every tenth cell = to the data cells. Select the new column and Copy and paste values only. Filter out all the blanks. And then select the new range of cells. and create a graph. this will allow you to have points within the range for every tenth piece of data. If you are doing this repeatedly then record a macro.

Nicole
 

longzoo

New Member
Joined
Nov 4, 2009
Messages
2
thanks for the reply Nicole, i actually started to do that but 57000 points! unfortunately i am doing this quite a bit but the row count can be anywhere from a few thousand to 87000 or so. (it's data collection at 1 hz so a 24 hour test yields 86,400)
i thought i remembered somewhere in the back of my mind "thinning" data for graphing...maybe it was with some other software package
 

nicolewh

Well-known Member
Joined
Aug 7, 2009
Messages
554
I'm actually not that good with VBA however. If it is something that you need to do many times then I would record a macro. When recording I would recommend that your data is in a table so that the range can be indefinite. When your done recording adjust things here and there. You can place it here and we can simplify it and make it work.

Nicole
 

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