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peter.cook

UK
356 Posts
Posted - 09/03/2004 :  11:14:51 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hi,

Can anyone please tell me how to sort an X-Y dataset eg created by 'create petesdata -c 10'. I can only think of a way using data_sort but I seem to have to copy data to a worksheet first in order to perform this fuction. I would really like to avoid this.

Cheers,

Pete

cpyang

USA
1406 Posts
Posted - 09/03/2004 :  11:50:04 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Use Curve, as can be seen below


void dd()
{
	LT_execute("create petesdata -c 5");
	LT_execute("petesdata = {1,2,3,4,5}");
	LT_execute("petesdata_a = {2,3,4,5,1}");
	
	Curve cc("petesdata_a", "petesdata");
	cc.Sort();
	for(int ii = 0; ii < cc.GetSize(); ii++)
	{
		printf("%d:%f\n", ii+1, cc[ii]);
	}
}



CP
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peter.cook

UK
356 Posts
Posted - 09/03/2004 :  12:03:34 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Thanks CP!

I hadn't browsed/scrolled through the help properly.

Cheers,

Pete
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peter.cook

UK
356 Posts
Posted - 09/03/2004 :  12:26:51 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi CP,

A problem I had was that OCSortXYDataSet fitcol$(ng)_a fitcol$(ng); doesn't work. I had to use %T=fitcol$(ng); OCSortXYDataSet %T_a %T;

Why is this?

Thanks,

Cheers,

pete
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cpyang

USA
1406 Posts
Posted - 09/03/2004 :  12:53:28 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
I think that was never supported, as long as you can see the work around, better just do that. With string variables, those %T etc should no longer be used to hold anything other than a temp variable. I understand in the past, many of such %T, %M etc might be holding longer term values that prevented them from being used anywhere to just as a temp variable.

CP
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peter.cook

UK
356 Posts
Posted - 09/03/2004 :  2:39:59 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

Thanks for reply. I do use eg %T for temp variables. Can use workaround now I know. The particular example was using multiple graphs and fitcol$(ng) referred to curve data for each graphs eg ng=1 to 12.

Cheers,

pete
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