topic Re: Python and JMP 18 in Discussions

Python and JMP 18

SophieCuvillier — Tue, 29 Jul 2025 08:51:22 GMT

Hello,

I am trying to use a piece of code in JMP 18, but I am not sure I understand how it works. I install the pythonn packages at the very beginning, then I send my variables to Python and run the Python code. But I always get one of the following errors: Either it does not detect numpy, even though numpy is installed, or it no longer detects the variable I just sent.

	Names Default To Here( 1 );
dt = Open( "$SAMPLE_DATA/Big Class.jmp" );
lstMeasures = Column( dt, "height" ) << Get As Matrix();
		
		Python Install Packages( "numpy pandas scipy" );

		Python Send( lstMeasures );
		

		Python Submit(
			"
import numpy as np
from scipy.stats import kstest, norm, weibull_min, rayleigh

data = np.array(lstMeasures)

# Fit des lois
mu, sigma = norm.fit(data)
ks_norm = kstest(data, 'norm', args=(mu, sigma))

c, loc, scale = weibull_min.fit(data)
ks_weibull = kstest(data, 'weibull_min', args=(c, loc, scale))

loc_r, scale_r = rayleigh.fit(data)
ks_rayleigh = kstest(data, 'rayleigh', args=(loc_r, scale_r))
"
		);

		ks_norm = Python Get( ks_norm );
		ks_weibull = Python Get( ks_weibull );
		ks_rayleigh = Python Get( ks_rayleigh );

Re: Python and JMP 18

jthi — Tue, 29 Jul 2025 09:26:36 GMT

Are you running exactly that code in JMP's (JSL) Script editor? I don't quickly see any issues with the script and it does works fine for me

Names Default To Here(1);

dt = Open("$SAMPLE_DATA/Big Class.jmp");
lstMeasures = Column(dt, "height") << Get As Matrix();
Python Install Packages("numpy pandas scipy");

Python Send(lstMeasures);

Python Submit("
import numpy as np
from scipy.stats import kstest, norm, weibull_min, rayleigh

data = np.array(lstMeasures)

mu, sigma = norm.fit(data)
ks_norm = kstest(data, 'norm', args=(mu, sigma))

c, loc, scale = weibull_min.fit(data)
ks_weibull = kstest(data, 'weibull_min', args=(c, loc, scale))

loc_r, scale_r = rayleigh.fit(data)
ks_rayleigh = kstest(data, 'rayleigh', args=(loc_r, scale_r))
");

ks_norm = Python Get(ks_norm);
ks_weibull = Python Get(ks_weibull);
ks_rayleigh = Python Get(ks_rayleigh);

show(ks_norm, ks_weibull, ks_rayleigh);

@Paul_Nelson

Edit: Which JMP18 are you using?

Re: Python and JMP 18

SophieCuvillier — Tue, 29 Jul 2025 12:09:42 GMT

Hello, I was using JMP Pro 18.0.0 but I restarted JMP and now I had no more issue ...

Re: Python and JMP 18

Paul_Nelson — Tue, 29 Jul 2025 12:28:01 GMT

Sometimes, especially the very first time JMP is run you may have to restart JMP in order for JMP to recognize newly installed Python packages. Numpy is particularly finicky. Also, Python's package handling mechanism doesn't look re-look for a package that failed to import. It knows it failed so why try again. You can force a package reload attempt by using importlib and reload.