[Scilab-users] Refresh plot from Slider

[Tan Chin Luh]

I see that the previous plot is not deleted, why?
--> seems that you miss out the "end" for your if statement

Do we need to add in another text to display the slider value?
--> as i understand, yes, u need to add a text to display it

CL


On 10-Sep-14 11:37 AM, tanthiamhuat wrote:
> Hi CL,
>
> thanks for pointing out my mistake of using the text handles.
>
> even if I add in the code:
> if ~isempty(handles.Axes1.children)
> delete(handles.Axes1.children);
> I see that the previous plot is not deleted, why?
>
> Secondly, is the slider able to display its value when it is slide along? If
> yes, that would be wonderful.
> Do we need to add in another text to display the slider value?
>
> Below are the full code:
>
> // This GUI file is generated by guibuilder version 3.0
> //////////
> f=figure('figure_position',[564,97],'figure_size',[656,665],'auto_resize','on','background',[33],'figure_name','Graphic
> window number %d');
> //////////
> delmenu(f.figure_id,gettext('File'))
> delmenu(f.figure_id,gettext('?'))
> delmenu(f.figure_id,gettext('Tools'))
> toolbar(f.figure_id,'off')
> handles.dummy = 0;
> handles.sliderAmp=uicontrol(f,'unit','normalized','BackgroundColor',[-1,-1,-1],'Enable','on','FontAngle','normal','FontName','Tahoma','FontSize',[12],'FontUnits','points','FontWeight','normal','ForegroundColor',[-1,-1,-1],'HorizontalAlignment','left','ListboxTop',[],'Max',[100],'Min',[0],'Position',[0.0984375,0.7583333,0.2421875,0.0583333],'Relief','flat','SliderStep',[10,10],'String','1','Style','slider','Value',[33.45],'VerticalAlignment','middle','Visible','on','Tag','sliderAmp','Callback','sliderAmp_callback(handles)')
> handles.sliderFreq=uicontrol(f,'unit','normalized','BackgroundColor',[-1,-1,-1],'Enable','on','FontAngle','normal','FontName','Tahoma','FontSize',[12],'FontUnits','points','FontWeight','normal','ForegroundColor',[-1,-1,-1],'HorizontalAlignment','left','ListboxTop',[],'Max',[100],'Min',[0],'Position',[0.0984375,0.5854167,0.2421875,0.0583333],'Relief','default','SliderStep',[0.01,0.1],'String','1','Style','slider','Value',[22.76],'VerticalAlignment','middle','Visible','on','Tag','sliderFreq','Callback','sliderFreq_callback(handles)')
> handles.editTime=uicontrol(f,'unit','normalized','BackgroundColor',[-1,-1,-1],'Enable','on','FontAngle','normal','FontName','Tahoma','FontSize',[12],'FontUnits','points','FontWeight','normal','ForegroundColor',[-1,-1,-1],'HorizontalAlignment','center','ListboxTop',[],'Max',[1],'Min',[0],'Position',[0.0984375,0.4291667,0.1175,0.0583333],'Relief','default','SliderStep',[0.01,0.1],'String','0:0.9:10','Style','edit','Value',[0],'VerticalAlignment','middle','Visible','on','Tag','editTime','Callback','')
> handles.pbPlot=uicontrol(f,'unit','normalized','BackgroundColor',[-1,-1,-1],'Enable','on','FontAngle','normal','FontName','Tahoma','FontSize',[12],'FontUnits','points','FontWeight','normal','ForegroundColor',[-1,-1,-1],'HorizontalAlignment','center','ListboxTop',[],'Max',[1],'Min',[0],'Position',[0.0984375,0.2645833,0.1121875,0.0583333],'Relief','default','SliderStep',[0.01,0.1],'String','Plot','Style','pushbutton','Value',[0],'VerticalAlignment','middle','Visible','on','Tag','pbPlot','Callback','pbPlot_callback(handles)')
> handles.Axes1= newaxes();handles.Axes1.margins = [ 0 0 0
> 0];handles.Axes1.axes_bounds = [0.415625,0.0770833,0.534375,0.725];
> handles.Amp=uicontrol(f,'unit','normalized','BackgroundColor',[-1,-1,-1],'Enable','on','FontAngle','normal','FontName','Tahoma','FontSize',[12],'FontUnits','points','FontWeight','normal','ForegroundColor',[-1,-1,-1],'HorizontalAlignment','left','ListboxTop',[],'Max',[1],'Min',[0],'Position',[0.1653125,0.702766,0.094375,0.0425532],'Relief','default','SliderStep',[0.01,0.1],'String','Amplitude','Style','text','Value',[0],'VerticalAlignment','middle','Visible','on','Tag','Amp','Callback','')
>
>
> //////////
> // Callbacks are defined as below. Please do not delete the comments as it
> will be used in coming version
> //////////
>
>
>
> function sliderAmp_callback(handles)
> //Write your callback for  sliderAmp  here
>
> endfunction
>
>
> function sliderFreq_callback(handles)
> //Write your callback for  sliderFreq  here
>
> endfunction
>
>
> function pbPlot_callback(handles)
> //Write your callback for  pbPlot  here
> funcprot(0)
> amp = get(handles.sliderAmp,'value');
> frq = get(handles.sliderFreq,'value');
> t= evstr(get(handles.editTime,'String'));
> y=amp.*sin(2*%pi*frq.*t);
> if ~isempty(handles.Axes1.children)
> delete(handles.Axes1.children);
> plot(t,y); xgrid();
> endfunction
>
>
>
> --
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