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O-2
5 Posts |
 Posted - 05/02/2014 : 02:09:17 AM
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I have a very simple data set consisting of two columns of integers.
I would like to produce a histogram of Column B across the range of Column A. i.e. bin up the numbers in column B for each corresponding value of A.
For example, if I have the data set: -
A B
0 1
1 1
2 3
1 0
3 2
1 2
2 2
I would like to plot B vs A, but binning each value of B, so what would actually be plotted is: -
A B
0 1
1 3
2 5
3 2
There must be an automated histogram tool that does this.
I'm sorry for the simple question. |
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lkb0221
China
497 Posts |
Posted - 05/02/2014 : 10:15:14 AM
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Hi,
You can use Analysis: Data Manipulation: Reduce Duplicate X Data tool
Zheng
OriginLab |
Edited by - lkb0221 on 05/02/2014 10:38:45 AM |
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Drbobshepherd
USA
Posts |
Posted - 05/02/2014 : 12:18:18 PM
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O-2,
Zheng's suggestion to use the Reduce Duplicate X Data tool is simple and straight-forward, but I liked his 1st suggestion (which I believe he retracted) to use a pivot table, because it is potentially more powerful. If you anticipate having more than one set of (A,B) values, the pivot table may be the better way to calculate your histograms.
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For example, you could calculate sums according to the month the (A,B) value was collected. Simply add a third column to your data, enter the month for each data point, and use the Worksheet:Pivot Table tool to calculate your sums. This works even if you don't need to group your data (Just enter the same month for all points).
DrBob |
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Drbobshepherd
USA
Posts |
Posted - 05/02/2014 : 12:42:28 PM
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O-2,
CLARIFICATION:
When I wrote,
quote:
one set of (A,B) values
I meant "one complete group of A-B data", not "one (A,B) data point". For example, the data you presented in your post would be one group of A-B data; then next month, you may have another set of A-B data.
DrBob |
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lkb0221
China
497 Posts |
Posted - 05/02/2014 : 1:54:04 PM
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Since DrBob mentioned, I re-post the pivot table method here in case someone is interested.
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Edited by - lkb0221 on 05/02/2014 1:54:29 PM |
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O-2
5 Posts |
Posted - 05/03/2014 : 03:52:52 AM
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| Thank you all, the pivot table solution worked very well. |
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Simple Histogram Question