While plotting, how to Convert YYaxis left via some formula and display it on YYAxis right...(Using R2020a)

i have imported a file that contains data "Range" and "dBsm" and plotted it....My dBsm data is on YYaxis 'left' now i wish that i should convert the dBsm data to metersquare via formula (10.^(dBsm/10) and display it on YYaxis 'Right'....so given below values should be shown as i mentioned in second plot which required...

40 >> 10,000

20 >> 100

0 >> 1

-20 >> 0.001

-40 >> 0.0001

The first plot is my output achieved and second plot shows the desired output

actually i m using ylim[ymin ymax] and assign

ymin = min(dBsm)

ymax = max(sBsm)

so the minimum and maximam value on yyaxis right are showing right but inbetween value r wrong... because "ylim" increases linearly from minimum to maximam... So thats not the rightway. instead of using Ylim i also simply converted my data via formula and used yyaxis 'right' but same results... . kindly guide how i should achieve the desired results shown in below graph.. if i again summarize my question.. i want that left yaxis should reflect on yaxis right by user given formula...i viewed all documentation of "YYAxis" but all examples shows linear increase of axis. Thanks

Answer 1

[Cris LaPierre]

The YTick location and label are separate properites, though by default are the same value. I would probably try to do this by changing the YTickLabels on the right axis (but not the YTick location/values).

I'd modify your PlotDataButtonPushed callback to this.

function PlotDataButtonPushed(app, event)
    yyaxis(app.UIAxes,"left");
    xlabel(app.UIAxes,'Range')
    ylabel(app.UIAxes,'dBsm')  
    title(app.UIAxes,'dBsm Vs Meter-Sqaure Graph')
    plot(app.UIAxes,app.b,app.c)
    ymin = min(app.c);
    ymax = max(app.c);
    ylim(app.UIAxes,[ymin ymax]);
    
    yyaxis(app.UIAxes,"right");
    ylabel(app.UIAxes,'Meter Square')
    ylim(app.UIAxes,[ymin ymax]);
    app.UIAxes.YAxis(2).TickLabels = 10.^(str2double(app.UIAxes.YAxis(1).TickLabels)/10);          
end

[taimour sadiq]

Thanks Alot Cris... its Exactly Working according to my Requirement i was trying it from many days but Fails.... You especially took interest to edit my Code.. i m Glad and once again more than Thanks..

[taimour sadiq]

Hello... Dear Cris i feel annoying interuppting you again... My Previous Question regarding YYAxis is answered at top level of Satisfaction.very Glad.. Now i m doing the same thing with simple code instead of app.UIAxes... Now when i studied the help it come to my knowledge that properties for UIAxes and uifigure are different... so i read all documentation of YTICK & YTickLabels and tried the same code and tryed to intergrate YTickLabels and YYaxis, tried too much but not succeded... last line giving error... if u can Guide me Further. Thanks

a = 0:1:10; 
b = [3 1 5 3 7 9 6 2 8 4 1];
plot(a,b)
yyaxis("left");
xlabel('Range')
ylabel('dBsm')  
title('dBsm Vs Meter-Sqaure Graph')
ymin = min(b);
ymax = max(b);
ylim([ymin ymax]);    
yyaxis("right");
ylabel('Meter Square')
ylim([ymin ymax]);
yticklabels.yyaxis("right")= 10.^(str2double(yticklabels.yyaxis("left"))/10);
%%%    YAxis(2).TickLabels = 10.^(str2double(YAxis(1).TickLabels)/10); 
%%%  YTick(1). yticklabels = 10.^(str2double(YTick(1).yticklabels)/10); 

[Cris LaPierre]

True, but the overall approach is the same. The problem you have is that you do not have a handles object to reference when switching between left and right axes. App designer automatically creates one for you, but in a script, you'll have to create your own variable for this.

You only really need this for setting the yticklabels, but to be consistent with what I shared above, I use it everywhere.

a = 0:1:10; 
b = [3 1 5 3 7 9 6 2 8 4 1];

ax = axes;

yyaxis(ax,"left");
xlabel(ax,'Range')
ylabel(ax,'dBsm')  
title(ax,'dBsm Vs Meter-Sqaure Graph')
ymin = min(b);
ymax = max(b);
ylim(ax,[ymin ymax]);
plot(ax,a,b)

yyaxis(ax,"right");
ylabel(ax,'Meter Square')
ylim(ax,[ymin ymax]);
ax.YAxis(2).TickLabels = 10.^(str2double(ax.YAxis(1).TickLabels)/10);

[taimour sadiq]

Thanks Alot... Works fine.. Really Appreciate ur Cooperation and Support..