Convert form string to number

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

end

[Rik]

They don't look the same to me. Look at the axis ranges. Also, the bottom one looks rounder to me, although that could simply be the data aspect.

You probably want to use the daspect function:

daspect([1 1 1])

[HANZU OLIVIU-MIHAI]

The first one should look like this but with mesh

[Rik]

All three axis ranges are different between the surf you showed and the screenshot of AppDesigner. How am I supposed to tell the difference?

If you want static ranges for your axis you will have to set them explicitly.

[HANZU OLIVIU-MIHAI]

How can I do that ?

[Rik]

doc xlim
doc ylim
doc zlim

Or even just simply with axis.

[HANZU OLIVIU-MIHAI]

Did you know how can I change the number of faces from the slide var?

[Voss]

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), ...
    app.n);

[HANZU OLIVIU-MIHAI]

I get this error after writing the code

[Voss]

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));