Convert form string to number

HANZU OLIVIU-MIHAI

2022 1 25

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Hello, I have in app designer 6 TextField that create an ellipsoid and i converted with str2double but the ellispoid looks the same with any numbers.

properties (Access = private)

xc = []; xr = [];

yc = []; yr = [];

zc = []; zr = [];

n = [];

end

% Callbacks that handle component events

methods (Access = private)

% Value changed function: DesenareStergereCheckBox

function DesenareStergereCheckBoxValueChanged(app, event)

app.xc = app.xcEditField.Value;

app.yc = app.ycEditField.Value;

app.zc = app.zcEditField.Value;

app.xr = app.xrEditField.Value;

app.yr = app.yrEditField.Value;

app.zr = app.zrEditField.Value;

[X,Y,Z] = ellipsoid(str2double(app.xc), str2double(app.yc), str2double(app.zc), str2double(app.xr), str2double(app.yr), str2double(app.zr));

axis equal

if app.DesenareStergereCheckBox.Value

set(mesh(app.UIAxes,X,Y,Z),'visible','on')

else

set(mesh(app.UIAxes,X,Y,Z),'visible','off')

end

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HANZU OLIVIU-MIHAI 2022-1-25

I get this error after writing the code

Voss 2022-1-25

编辑：Voss 2022-1-25

在 MATLAB Online 中打开

I guess you have to convert n to a number first (apparently contradicting the documentation for uislider(), which states that Value is numeric - who knows, maybe that's not a uislider() you have there at all, there is no way for me to know):

app.xc = app.xcEditField.Value;
app.yc = app.ycEditField.Value;           
app.zc = app.zcEditField.Value;
app.xr = app.xrEditField.Value;
app.yr = app.yrEditField.Value;   
app.zr = app.zrEditField.Value; 
app.n = app.nSlider.Value; % <-- use whatever your slider is called instead of "nSlider" here
[X,Y,Z] = ellipsoid( ...
    str2double(app.xc), ...
    str2double(app.yc), ...
    str2double(app.zc), ...
    str2double(app.xr), ...
    str2double(app.yr), ...
    str2double(app.zr), ...
    str2double(app.n));