How to remove a slash from fullfile?

I want the file path for wtf to read: 'C:\Users\jessi\Desktop\HydrusMC\Simulations\MC_1\Obs_Node.out'

but with the code as scripted below renders:

'C:\Users\jessi\Desktop\HydrusMC\Simulations\MC_\1\Obs_Node.out'

How do I drop the \ between the MC_ and the 1? I couldn't find any advise from other posts on this aspect of fullfile.

wtf= fullfile('C:\\','Users','jessi','Desktop','HydrusMC','Simulations','MC_',num2str(i),'Obs_Node.out');

[Stephen23]

This has nothing to do with FULLFILE, you can simply concatenate them together:

['MC_',num2str(i)]

or use a string:

"MC_"+i

Answer 1

[Hiro Yoshino]

How about this?

wtf= fullfile('C:\\','Users','jessi','Desktop','HydrusMC','Simulations',("MC_"+num2str(1)),'Obs_Node.out')

wtf = "C:\\/Users/jessi/Desktop/HydrusMC/Simulations/MC_1/Obs_Node.out"

[Wesser]

Worked! Thanks!

If it's ok to pile on a follow up questions....

I am getting the error:

Error using fgets

Invalid file identifier. Use fopen to generate a valid file identifier.

Error in fgetl (line 32)

[tline,lt] = fgets(fid);

Error in Concentration (line 14)

x=fgetl(Node_conc);

in the below code. I posed this question yesterday and thought that resolving the file path issue would make the error go away, but it didn't. Any suggestions?Malab doesn't seem to like me using fgetl.... but why?

num_sim=1000;    % Number of Monte Carlo Simulations

Node_CONC=zeros(57759,num_sim); %preallocation for output from all monte carlos

path=cell(1,num_sim);
for i=1:num_sim
    
    wtf= fullfile('C:\\','Users','jessi','Desktop','HydrusMC','Simulations',("MC_"+num2str(i)),'Obs_Node.out');

    Node_conc = fopen('wtf','r');   % Open monte carlo output file in Path (i) 
    
    skip_lines=11;   %skip all the lines until the actually output data 
    for k=1:(skip_lines)
        x=fgetl(Node_conc);
    end
 
    temp = fscanf(Node_conc,'%f',[5,57759]);        %scan the matrix of data
    TEMP = temp';       % transpose data
    temp_Conc = TEMP(:,5);      % select the 5th column (concentration)
    Node_CONC(:,i) = temp_Conc(:);      % save the concentration a new file, one column per iteration of loop
    fclose(Node_conc);
end
 %Node_CONC(:,1)=temp(:,2)
 

  

[Hiro Yoshino]

wtf= fullfile('C:\\','Users','jessi','Desktop','HydrusMC','Simulations',("MC_"+num2str(i)),'Obs_Node.out');

Node_conc = fopen('wtf','r'); % Open monte carlo output file in Path (i)

You should pass the content of "wtf" to the function fopen.

In this case, you are passing the character array of 'wtf'.

You can tell the difference by checking out these as follows:

'wtf'

ans = 'wtf'

wtf= fullfile('C:\\','Users','jessi','Desktop','HydrusMC','Simulations',("MC_"+num2str(i)),'Obs_Node.out')

wtf = "C:\\/Users/jessi/Desktop/HydrusMC/Simulations/MC_0+1i/Obs_Node.out"

Answer 2

[Voss]

Combine the 'MC_' and the i into a single argument.

Like this:

wtf= fullfile('C:\','Users','jessi','Desktop','HydrusMC','Simulations',['MC_' num2str(i)],'Obs_Node.out');

Or this:

wtf= fullfile('C:\','Users','jessi','Desktop','HydrusMC','Simulations',sprintf('MC_%d',i),'Obs_Node.out');

[Wesser]

Thank you. These worked as well as the method suggested above.