How to assign new variables?

I am using following lines of matlab code to assign new variables to print on plot.

if(dependent_vars{jj} == 'act_y_ha') 
    par = 'act\_y\_ha'
end
if(dependent_vars{jj} == 'act_per_ha') 
    par = 'act\_per\_ha'
end

This code is giving following error

par = 'act\_y\_ha'

Arrays have incompatible sizes for this operation.

Error in ds_reg (line 69)

if(dependent_vars{jj} == 'act_per_ha')

I request you to kindly suggest me to fix the error.

Devendra

Answer 1

[Konstantinos]

The error you're encountering, "Arrays have incompatible sizes for this operation," suggests that the comparison operation == between the string 'act_per_ha' and the cell array element dependent_vars{jj} is causing an issue due to incompatible sizes or types.

To fix this error, you can use the strcmp function to compare strings in MATLAB. Here's the corrected code:

if strcmp(dependent_vars{jj}, 'act_y_ha')
    par = 'act\_y\_ha';
end
if strcmp(dependent_vars{jj}, 'act_per_ha')
    par = 'act\_per\_ha';
end

[Devendra]

Thank you very much for your kind help. However, following error has occured;

Error using strcmp

Not enough input arguments.

Error in ds_reg (line 66)

if strcmp(dependent_vars{jj} == 'act_y_ha');

Please suggest me how to assign new variables?

Deva

>>

[Voss]

It's

strcmp(dependent_vars{jj}, 'act_y_ha')

not

strcmp(dependent_vars{jj} == 'act_y_ha')

[Devendra]

Thanks a lot for your kind help, Deva

[Voss]

@Devendra: You're welcome!

Note that an easy way to prepend a backslash to all underscores in all elements of dependent_vars is:

dependent_vars = strrep(dependent_vars,'_','\_');

[Devendra]

Thank you very much for your help, Devendra

[Star Strider]

@Devendra — See: Answer

Answer 2

[Star Strider]

Use the strrep function instead of the if block —

jj = 1;
dependent_vars{jj} = 'act_per_ha';
jj = 2;
dependent_vars{jj} = 'act_per_ha';
jj = 3;
dependent_vars{jj} = 'line with no underscores';

for jj = 1:numel(dependent_vars)
    dependent_vars{jj} = strrep(dependent_vars{jj}, '_', '\_');
end

dependent_vars{:}

ans = 'act\_per\_ha'

ans = 'act\_per\_ha'

ans = 'line with no underscores'

.

[Devendra]

Thank you for your help. Deva

[Star Strider]

My pleasure!