Re-writing and Plotting TXT File By Using Push Button GUI in Matlab

Hello, everyone.... I need your help to fix my GUI script to re-write and plotting a TXT File by using pushbutton. So i have a matlab script which were run correctly to import a TXT File (attached File) and re-write it in the other column format and also plot its component (DATE + TIME) versus ABKZ. Here is my Correct Matlab Script you can run it over your matlab (by pressing F5) :

close all
clear clc
clc

filename = "abk198911dmin.txt"
opts = detectImportOptions(filename,"NumHeaderLines",12);
        opts.SelectedVariableNames = ["DATE","TIME","ABKZ"];
        T = readtable(filename,opts);
DATE = T{:,1};
TIME = T{:,2};
TIME.Format = 'hh:mm:ss';
DOY = T{:,3};
d = T.DATE + T.TIME;
p = plot(d, DOY);
[namafile2, direktori] = uiputfile('*.txt', 'SAVE AS')
    eval(['cd ''' direktori ''';']);
    fout=fopen(namafile2,'w');
for i=1:length(DOY)
        fprintf(fout,'%s %.2f\n', char(d(i)), DOY(i));        
    end

And the ouput should be 2 kind : 1) Plot Figure and 2) the re-writted TXT file from the original file (abk198911dmin.txt) contained with the new formatted data from the above script :

29-Nov-1989 23:31:00 51018.00
29-Nov-1989 23:32:00 50983.00
29-Nov-1989 23:33:00 50987.00
29-Nov-1989 23:34:00 50988.00
29-Nov-1989 23:35:00 50988.00
29-Nov-1989 23:36:00 50992.00
29-Nov-1989 23:37:00 50981.00
29-Nov-1989 23:38:00 51001.00
29-Nov-1989 23:39:00 51037.00
29-Nov-1989 23:40:00 51056.00
29-Nov-1989 23:41:00 51099.00
29-Nov-1989 23:42:00 51137.00
29-Nov-1989 23:43:00 51151.00
29-Nov-1989 23:44:00 51160.00
29-Nov-1989 23:45:00 51166.00
29-Nov-1989 23:46:00 51172.00
29-Nov-1989 23:47:00 51182.00.................................

However, i always fail to load the TXT file data by using pushbutton on GUI. The pushbutton process i want is simple as :

1) Load the TXT File to Matlab

2) Re-write the Data in another TXT File (manual name) by that format i want : "DATE","TIME","ABKZ"

The above process should be done in one click.

This is my Fail Script :

function pushbutton_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
    formku = guidata(gcbo);
    [namafile,direktori]=uigetfile('*.txt','Load Data Magnet LEMI Format IAGA','Multiselect','on');
    eval(['cd ''' direktori ''';']);
    eval(['dataku=load(''' namafile ''')']);
    
        opts = detectImportOptions(dataku,"NumHeaderLines",12);
        opts.SelectedVariableNames = ["DATE","TIME","ABKZ"];
        T = readtable(dataku,opts);
        DATE = T{:,1};
        TIME = T{:,2};
        TIME.Format = 'hh:mm:ss';
        DOY = T{:,3};
        d = T.DATE + T.TIME;
        w = hours(T.TIME(1:5));
        h = hours(T.TIME(1:end));
        l = plot(d, DOY);
        xlabel('Deret Waktu (Time Series)','fontweight','bold','fontsize',10);
        ylabel('Komponen H Magnet Data Lemi Non IAGA Format (nT)','fontweight','bold','fontsize',10);
        legend('off');
        set(formku.figure1,'CurrentAxes',formku.satu);
        set(l,'LineWidth',1);  
        set(formku.satu,'Color',[1 0.96 0.9],...
                     'XGrid','on',...
                     'YGrid','on',...
                     'NextPlot','add');
        set(formku.figure1,'Userdata',dataku);

And for the other pushbutton (lets say pushbutton2), the pushbutton process should be :

1) Load the TXT File to Matlab

2) Plot in a figure (just like the output file of my correct matlab script above)

in a single click...

This is my Fail Script :

function pushbutton2_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
    formku = guidata(gcbo);
    [namafile,direktori]=uigetfile('*.txt','Load Data Magnet Format LEMI');
    eval(['cd ''' direktori ''';']);
    eval(['dataku=load(''' namafile ''')']);
     [namafile2, direktori] = uiputfile('*.txt', 'Simpan Hasil Sebagai')
         eval(['cd ''' direktori ''';']);
         fout=fopen(namafile2,'w'); 
         dataku = get(formku.figure1,'Userdata');
        opts = detectImportOptions(dataku,"NumHeaderLines",12);
        opts.SelectedVariableNames = ["DATE","TIME","ABKZ"];
        T = readtable(dataku,opts);
        DATE = T{:,1};
        TIME = T{:,2};
        TIME.Format = 'hh:mm:ss';
        DOY = T{:,3};
        d = T.DATE + T.TIME;
        p = plot(d, DOY);
        
    for i=1:length(DOY)
        fprintf(fout,'%s %.2f\n', char(d(i)), DOY(i));        
    end
   
    fclose(fout);

So, everyone... Please help me to do this work. Thank you very much... Im so grateful if you can solve my problem....

[Veronica Taurino]

What error did you get?

[Tyann Hardyn]

This is my Fail Script :

In the code below that sentences.... to be exact in my GUI pushbutton script

[Tyann Hardyn]

It just didnt do anything after execution (run)..

what i want is, creating a pushbutton to load, read, and create a File which re contained with that output in my correct script (Txt File with re format data) and other pushbutton to load, read, and create a plot figure by using its data..

[Rik]

You need to make sure your function runs well first.

You should remove the eval and cd calls, use fullfile to generate an absolute path instead.

Also, you don't explain what errors you're getting. Once you start your GUI, what do you? What error are you getting? What happened when you tried using the debugger to step through your code?

[Tyann Hardyn]

Oh yeahh.. i will look for the debugger... Wait...

[Tyann Hardyn]

@Rik, would you mind to help me out with that " fullfile " implemented to my GUI script? How its work?

[Rik]

Have you read the documentation? It allows you to put different parts of a path together so you can use the actual full path to a file, instead of having to CD.

[Tyann Hardyn]

I have not read the documentation, where is the link of it? and what the continuation after implementing the fullfile? please tell me how to connect the fullfile with the pushbutton i want.

[Rik]

If you have trouble with Matlab basics you may consider doing the Onramp tutorial.

You can either Google 'documentation fullfile matlab', or run this in Matlab:

doc fullfile