VEX - POP group - npointsgroup function

[WLVL]

Hello Everyone!

 

I have a Pop source followed by a pop group;

 

i need the number of points contained in my source group to be stored in a variable that i am using in a fit function.

npointsgroup function returns 0, (tried also with the npoints function)

what am i doing wrong?

 

 

int npts = npointsgroup(0,"stream_chunks");
float ptprog = fit(@Frame, ch("s_frame"), ch("e_frame"), ch("s_value"),npts);  
ingroup = (@id>ptprog);     

PS_i am trying to print the value but also this seem not to work

//void printf("npts= %d", npts);

 

 

Thank you in advance!

[loopyllama]

int npts = npointsgroup(0,"stream_chunks");
float ptprog = fit(@Frame, ch("s_frame"), ch("e_frame"), ch("s_value"),npts);  
ingroup = (@id>ptprog);     

If you are doing that business in pops, throw it in a sop solver.

Inside the default sop solver in pops, drop down a wrangle with:

i@numpts = npoints(0); 

and hook it up to the Dop Import "dop_geometry". numpts shows up with the correct count in the geometry spreadsheet.

[WLVL]

Hi loopyllama! thank you for helping, it worked!!

 

I was using that code in the pop_group node. Why does it not work there?

 

 

thank you

[loopyllama]

You can throw down a POP Wrangle in DOPS, go to the Inputs tab, and set Input 1 to Myself. In the Code tab enter:

i@foo = npoints(0);
i@bar = npointsgroup(0,"MyGroupName");

assuming that "MyGroupName" exists.