# Is it possible to ask Mathematica to crop a specified area in the given plot? or, is it possible to manually erase redundant part of a plot?

I am using this code

pic1 = GridGraph[{19, 10}, PlotRange -> {-10, 10}];
pic2 = Graphics[ {{Inset[Style["text", Black, FontSize -> Scaled[0.1], FontFamily -> "Times"], {5, 5}] } } ]  ;
pic3 = Show[{pic1, pic2}] ;
pic4 = Graphics[ {LightRed, Rotate[Rectangle[{30, 30}, {50, 10}], 45 Degree]} ,ImageSize -> 200 ] ;

Overlay[{pic4, pic3}]

and the result is $$Fig1$$. I have two questions:

Q1. How can I ask Mathematica to crop only the red area and give a result like Fig2? or, alternatively, is it possible to manually erase/remove the unwanted area in Fig1 and then export it as a PDF file?

Q2. Is it possible to control the position of the red square in Fig1 (the corresponding code pic4)? For example, moving it a bit to the right?

• Look for RegionFunction Commented Mar 9, 2023 at 13:16
• How to use RegionFunction with Overlay? What RegionFunction should I use to describe the rectangular area I am interested in? Commented Mar 9, 2023 at 15:00

Unfortunately RegionFunction doesn't work with Graphics or Show, sorry for my misleading hint in my comment.

pic1 = GridGraph[{11, 10} ];
pic2 = Graphics[{{Text(*Inset*)[Style["text", Black, FontSize ->Scaled[0.1],FontFamily -> "Times"], {5, 5}]}}];
pic = {pic1, pic2} ;

reg = TransformedRegion[ Rectangle[{5, 3 }, {10, 8}] ,RotationTransform[Pi/4, {5, 3}]];
pic4 = Graphics[{LightRed, reg} ];

Show[{pic4, pic  } ]

final picture with passepartout:

frame = Rectangle [ {0, 0}, {11, 12}]; (* not to small*)