How to make the axis adjust to new plots

In the app designer i have included a plot for projectile motion, however i cant seem to make the axis values adjust when plotting a second graph on top of it- it remains at the limits of the first plot i.e. i cant see the second plot provided the x and y values are greater than the first plot

any help would be greatly appreciated! im pulling my hair out over this!

comet(app.Graph,x,y,0.1)

hold(app.Graph,'on')

[Cris LaPierre]

Pleaes share your plotting code. The code you shared only contains code for one plot created by comet.

[Anon]

hi sorry- is this it?

[Jan]

Please post code as text, noit as screenshot. This makes it much easier to use copy&paste to post an answer.

[Anon]

 t = linspace(0,tFinal,100) %creates an array of time with 100 elements
           x = v0x.*t %calculates the range (x)
           y = y0 + v0y.*t+0.5*g*t.^2 %calculates the height (y)
           y(y < 0) = 0; %the y-axis cannot go below 0!

           comet(app.Graph,x,y,0.1) %plots the projectile as a comet animation
           hold(app.Graph,'on')
           
           plot(app.Graph,x(y==max(y)),y(y==max(y)),'ro')
           text(app.Graph,x(y==max(y)),y(y==max(y)),'\leftarrow MAX HEIGHT')

sorry about that - first time posting a question!

Answer 1

[Cris LaPierre]

I would add the following to the bottom of your plotting code.

hold(app.Graph,'off') % best practice to always pair hold on with a hold off
axis(app.Graph,'auto')

Answer 2

[Rishabh Mishra]

Hi,

Based on my understanding of the issue, I can assume that you are using ‘app.graph’ as axes handle object to create plots over it.

In this case, since the x & y limits of the axes object is not appropriate, you are unable to view the 2nd plot.

To resolve the issue, readjust the x & y limits of the axes handle object ‘app.graph’. The code is given below:

app.graph.XLim = [-20 20]; % example range of values 
app.graph.YLim = [-20 20]; % example range 

The range of values above should be such that it includes both the plots.

Hope this helps.