# Plot markers getting compressed in double y -axis plot

I have to plot a list plot with the double y-axis; range y1 = {0, 125} and range y2 = {100, 900}. I have to use markers for the points in the plot. I have used the following code to create markers for the plots

markers1={Graphics[Disk[],ImageSize->8],Graphics[Rectangle[],ImageSize->8],Graphics[Simplex[{{0,0},{1,1},{2,0}}],ImageSize->12]};
markers2={Graphics[Disk[],ImageSize->20],Graphics[Rectangle[],ImageSize->20],Graphics[Simplex[{{0,0},{1,2},{2,0}}],ImageSize->22]};


I have used ResourceFunction["CombinePlots"] to combine the plots.

But the markers in the second y-axis plot is getting compressed. The picture is attached. How can make all the markers same?

• Please post all your code and data. It is hard to answer this given just the plot markers. Feb 11, 2021 at 19:04

One option is to use Offset-type coordinates for your plot markers (see also this question):

markers = {
Graphics[Disk[{0, 0}, Offset@5], ImageSize -> 20], Graphics[Rectangle[Offset[{-5, -5}], Offset[{5, 5}]], ImageSize -> 20], Graphics[Simplex[Offset /@ {{-5, -5}, {0, 5}, {5, -5}}], ImageSize -> 22]
};

SeedRandom[2];
ResourceFunction["CombinePlots"][
ListLinePlot[RandomInteger[{0, 10}, {3, 5}], PlotMarkers -> markers, Frame -> True],
ListLinePlot[RandomInteger[{0, 100}, {3, 5}], PlotMarkers -> markers, Frame -> True, PlotStyle -> Dashed],
"AxesSides" -> "TwoY"
]


(Note also that I have made sure the markers are centered around {0,0} to make sure they are properly aligned, see AlignmentPoint for more details)

I have solved the above problem. You can change the shape of the circle and rectangle in the marker2 to fit the compression. Here is the code.

     markers2={Graphics[Disk[{0,0},{1.5,10}],ImageSize->8],Graphics[Rectangle[{0,0},{1,5}],ImageSize->8],Graphics[Simplex[{{0,0},{1,10},{2,0}}],ImageSize->12]};