Command Function will not accept the script name. I have tried changing the function name so it is different from the script but this still does not work.

%Setup Matlab Script 
clear
close all
clc
function plotctd(datafilename)
Data = dlmread(datafilename,'',117,1);
Depth=Data(:,1);
Salinity=Data(:,2);
Temp=Data(:,3);
%calculating density 
Density=sw_dens0(Salinity,Temp);
%Subplot of data
subplot(1,3,1)
plot(Temp,Depth,'k-+')
set(gca,'YDir','reverse')
xlabel('Temperaure (^oC)')
ylabel('Depth (m)')
grid 
subplot(1,3,2)
plot(Salinity,Depth,'k-+')
set(gca,'YDir','reverse')
xlabel('Salinity (PSU)')
grid
title(datafilename)
subplot(1,3,3)
plot(Density,Depth,'k-+')
set(gca,'YDir','reverse')
xlabel('Density (kg/m^3)')
grid
plotctd('D1.cnv')
end

This code gives me the error message:

File: plotctd.m Line: 6 Column: 10

Local function name must be different from the script name.

Answer 1

[Walter Roberson]

clear
close all
clc

Delete those lines.

[Luke Ainsworth]

Not really sure what happened but that didn't work either. It says that datafilename isn't correct.

[Steven Lord]

Please show us the exact line of code you're using to try to run your function and the full and exact text (everything displayed in red and/or orange in the Command Window) of the error and/or warning messages you receive when you run that exact line of code. This information may help us understand why MATLAB throws an error.

[Luke Ainsworth]

[Walter Roberson]

It would be easier on the volunteers if you were to post code instead of posting pictures of code.

Delete your current line 31, which reads

plotctd(D1.cnv)

Now, create a new file, perhaps plot_D1.m that contains

plotctd('D1.cnv')

and execute that file.

[Stephen23]

@Luke Ainsworth: you have defined a recursive function which only stops because of invalid input data.

Solution: do not call PLOTCTD inside the function PLOTCTD.

You also need to call the function with a valid filename as its input argument.