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 Return BasicStats structure?		  New Topic  Reply to Topic
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Mike Buess

USA
3037 Posts
Posted - 04/10/2003 :  2:20:10 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Dataset dd;
--set up dd--
BasicStats bsStats;
Data_sum(&dd, &bsStats);

Currently I pass individual bsStats values back to LabTalk like this...

LT_set_var("v1", bsStats.N);
LT_set_var("v2", bsStats.total);
--etc.--

That works fine, but I'd rather return the entire bsStats structure and access its values in LabTalk like this...

v1 = something.N;
v2 = something.total;

Is that possible?

Mike Buess
Origin WebRing Member

srmcarneir

Brazil
33 Posts
Posted - 04/11/2003 :  1:44:59 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Mike,

Would it be enough for you if you tried the Dataset::Update method? In the help files we can find a description showing that it "Update the Dataset object to or from the origin worksheet column", once your OriginC dataset is associated to an Origin worksheet. Regards.

Ricardo Carneiro
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Mike Buess

USA
3037 Posts
Posted - 04/12/2003 :  12:57:10 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Ricardo,

I don't think Dataset::Update will do it. Data_sum(&dd,&bsStats) gets the basic statistics for Dataset dd and returns them in the bsStats structure...

bsStats.N // number of values
bsStats.total // sum
bsStats.mean // mean
-etc.-

I just want to access those statistics from LabTalk as is done with the LabTalk sum(dataset) command. So my basic question is this... can an Origin C command return a structure to LabTalk. If so, how is it done? The following function compiles OK...

BasicStats OC_sum()
{
Dataset dd;
--set up dd--
BasicStats bsStats;
Data_sum(&dd, &bsStats);
return &bsStats;
}

...but I don't know how (or if) it can be used in LabTalk.

Mike Buess
Origin WebRing Member
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easwar

USA
1965 Posts
Posted - 04/12/2003 :  9:16:05 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Mike,

Currently there is no support for passing a structure between OC and LabTalk. So you will need to set LT variable values like you are doing now.

However, specifically for basic stats, you could have a function such as below to execute the sum command in LT so that the stats are readily available in LT once this function is called.


void OC_sum(Dataset& dd)
{
	string strCMD = "sum(" + dd.GetName() + ");";
	LT_execute(strCMD);
}



Easwar
OriginLab.



Edited by - easwar on 04/12/2003 9:40:48 PM

Edited by - easwar on 04/12/2003 9:41:46 PM
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