How to create a GUI in matlab?

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Harry Smith 2022-9-13

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评论： Harry Smith 2022-9-15

Hello everybody,

i am not very experienced in matlab.

I have to create a GUI that a gui that should make me enter:

input: a file (of any extension) and the numerical values of some variables (ex: x coordinates, y coordinates, size_map)

output: an .hdr file that contains these numeric values associated with the input file

i'm using gdal in matlab

How can I do?

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Image Analyst 2022-9-13

Sounds like you totally overlooked or ignored my answer below. Why?

Harry Smith 2022-9-13

I'm sorry, I answered you

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回答（1 个）

Image Analyst 2022-9-13

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1804450-how-to-create-a-gui-in-matlab#answer_1052720

在 MATLAB Online 中打开

spatial_calibration_demo.m

You forgot to attach your input file, probably because you never read the community guidelines or this link:

TUTORIAL: How to ask a question (on Answers) and get a fast answer

So if the file is a binary image, you can do

mask = imread(filename);
[rows, columns] = find(mask);
x_min = min(columns);
x_max = max(columns);
y_min = min(rows);
y_max = max(rows);

To get the pixel size you're going to have to get that somehow, like from spatial calibration or the header of the image. Otherwise, any spatial analysis will just give you results in pixels, which really doesn't have a size, or maybe you just want to consider it as 1. But if you want real world units, you have to calibrate like shown in my attached demo.

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Image Analyst 2022-9-15

在 MATLAB Online 中打开

It should be. Write a small demo that proves this to me. Here are the steps you should do:

% Read your existing table.
t = readtable(filename)
% Now alter one field to have a different value.
t.Whatever(1) = someNewValue;
% Now call write table and save to a different text file.
filename2 = 'answers.txt'
writetable(t, filename2)

Then attach the code and both text files with the paperclip icon.

Harry Smith 2022-9-15

在 MATLAB Online 中打开

fileinput.txt

In this case it works, but I would like to be able to change the values at the graphical interface, not at the code level.

I attach the input file and my code:

file='fileinput.txt'; 
table_filetxt=readtable(fileinput);
fig = uifigure;
uit = uitable(fig,'Data',table_filetxt);
uit = uitable(fig);
    uit.Data = table_filetxt;
    uit.ColumnSortable = true;
    uit.ColumnEditable = [false true true true];
fileinput2='fileinput2.txt'
writetable(table_filetxt,'fileinput2.txt');