Graphing data

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How do I plot data generated from my function? Sorry I am new to the programming. We have made variables and did a do loop to generate repeated variables at different times. We can't even plot this without transferring it to excel. I know there are functions to do this in Igor. Can anyone point me to the right spot in the manual or know how to make a simple code to graph data? Or even how to make a data folder where we can graph it then?

Uploaded is the code.

Thanks hh5.1.pxp (18.21 KB)
As a quick start ...

* change your do/while loop to a for/endfor loop
* create waves to store your values
* store each iteration

variable ic, nt
nt = Ttot/dT
make/O/N=(nt) VmmV, tms, nm, hw
for (ic=0;ic<nt;ic+=1)
// your loop code here
VmmV[ic] = Vm; tms[ic] = t*1000; nm[ic] = n; hw[ic] = h
endfor


After you run the procedure, you can use display to show any one or multiple sets of the the waves.

HTH

--
J. J. Weimer
Chemistry / Chemical & Materials Engineering, UAHuntsville

December 6, 2010 at 11:13 am - Permalink

Here is a simplified example that might give you the idea:
Function DoSimulationForOnePoint(pointNum, a, b)
    Variable pointNum
    Variable a, b
    
    Variable val
    val = a * pointNum + b
    return val
End
 
// RunSimulation(a, b, n, out)
//  Example: RunSimulation(1, 0, 10, "run1")
//  Example: RunSimulation(.1, 0, 10, "run2")
Function RunSimulation(a, b, n, out)
    Variable a              // y = ax + b
    Variable b              // y = ax + b
    Variable n              // Number of points
    String out              // Name of output wave
    
    Make/O/N=(n) $out
    Wave wOut = $out        // Create wave reference
    
    Variable i
    for(i=0; i<n; i+=1)
        Variable val
        val = DoSimulationForOnePoint(i, a, b)
        wOut[i] = val
    endfor
    
    Display wOut
End


I split the number crunching into a subroutine (DoSimulationForOnePoint) so that the structure of the main routine (RunSimulation) remains clear.

In this case, it could be simplified to this:
Make/O/N=10 run1 = DoSimulationForOnePoint(p, 1, 0)


and simplified further to:
Make/O/N=10 run1 = 1*p + 0

December 6, 2010 at 03:01 pm - Permalink