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tinkusch
Germany
94 Posts |
 Posted - 10/07/2003 : 10:06:42 AM
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Hi,
is someone able to explain me the proper use of the LabTalk function:
histogram(dataset, inc, min, max)
An example would be fine.
It seems not to work with my Origin v7.0273 on a WIN98 computer and the explanation in help is very sparse...
Is there any other LabTalk option for the creation of an histogram or a frequency count?
Thanks for any help, bye
Stefan
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greg
USA
1380 Posts |
Posted - 10/15/2003 : 12:21:47 PM
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The histogram function returns a dataset with 'bins' (the x ranges) defined by the inc, min and max arguments.
In use:
Data2_B = histogram(Data1_B,10,0,100);
would calculate a histogram of Data1_B from 0 to 100 with a bin size of 10, and the histogram values would be put in Data2_B. To plot the data, you need to understand how to set the X values. The X value bins for the example are:
0 .. <10
10.. <20
20.. <30
etc.
which are 'centered' on:
5
15
25
etc.
so we can use:
get data2_B -e end;
start=5;
loop(ii,1,end) {
data2_a[ii]=start;
start+=10; // The increment
}
The result of this should be the same as our Histogram statistical plot.
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tinkusch
Germany
94 Posts |
Posted - 10/16/2003 : 11:10:10 AM
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Hi Greg,
thanks for your help, now it is clear.
There is obvioulsy no command in LabTalk to do frequency counts on datasets the same way as with the macro in the following menue:
Statistics
Descriptive Statistics
FrequencyCount..
???
That brings me to an other general question:
Are commands from the menue also accessible/usable in a LabTalk script?
bye & thanks
Stefan
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Histogram