If you are using lines, you just have to call "XData", "YData" and "ZData" of your uiaxes's childrens. For example:
>> plot(app.UIAxes, randn(1001,1));
>> app.UIAxes.Children
ans =
Line with properties:
Color: [0 0.4470 0.7410]
LineStyle: '-'
LineWidth: 0.5000
Marker: 'none'
MarkerSize: 6
MarkerFaceColor: 'none'
XData: [1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 … ]
YData: [1.6302 0.4889 1.0347 0.7269 -0.3034 0.2939 -0.7873 0.8884 -1.1471 -1.0689 -0.8095 -2.9443 1.4384 0.3252 -0.7549 1.3703 -1.7115 -0.1022 -0.2414 … ]
ZData: [1×0 double]
>> ax.Children.XData(1:10)
ans =
1 2 3 4 5 6 7 8 9 10
