How to hide extra lines from a grid plot?

Questions
1

Hi. I tried to plot a frequence density with Mathematica 13.2. I want the square grid to be only in region {{0, 11} ; {0,7}}. But i got horizontal e vertical lines outside this area. I think threis something wrong with grid commands. All I’v done is in file Untitled-1, in Attachments. Can anybody help me, please! (It’ s only a part of graph)

Plot1 = Plot[{3, 0}, {x, 0, 1}, Filling -> {1 -> {2}}, 
  FillingStyle -> {LightBlue}, 
  GridLines -> {Range[0, 11, 1/2], Range[0, 7, 1/2]}, Ticks -> None, 
  PlotRange -> {{-2, 11}, {-2, 7}}, AspectRatio -> Automatic, 
  PlotStyle -> 
   Directive[GrayLevel[0], Opacity[1], AbsoluteThickness[1.601]], 
  AxesStyle -> Arrowheads -> {Automatic}, AxesOrigin -> {0, 0}, 
  BaseStyle -> {FontFamily -> "Times New Roman", 
    FontWeight -> "Medium", FontSize -> 14}, 
  Epilog -> {{Rotate[
      Text[Style["Densiteti i frekuencës", FontSize -> 14], {-1.3, 
        3.5}], 90 Degree]}, 
    Text[Style["O", FontSize -> 14], {-0.5, -0.5}], 
    Text["Koha (min)", {5, -1}], Text["2", {1, -0.5}], 
    Text["4", {2, -0.5}], Text["12", {6, -0.5}], 
    Text["18", {9, -0.5}], Text["20", {10, -0.5}], 
    Text["4", {-0.4, 1}], Text["8", {-0.4, 2}], Text["12", {-0.5, 3}],
     Text["16", {-0.5, 4}], Text["20", {-0.5, 5}]}]

Untitled-1.nb (15.1 KB)

2

(Ticks->Automatic, GridLines->Automatic, moved -0.5 to -1)
Plot1 = Plot[{3, 0}, {x, 0, 1}, Filling → {1 → {2}},
FillingStyle → {LightBlue}, Ticks->Automatic,
GridLines ->Automatic,
PlotRange → {{-2, 11}, {-2, 7}}, AspectRatio → Automatic,
PlotStyle →
Directive[GrayLevel[0], Opacity[1], AbsoluteThickness[1.601]],
AxesStyle → Arrowheads → {Automatic}, AxesOrigin → {0, 0},
BaseStyle → {FontFamily → “Times New Roman”,
FontWeight → “Medium”, FontSize → 14},
Epilog → {{Rotate[
Text[Style[“Densiteti i frekuencës”, FontSize → 14], {-1.3,
3.5}], 90 Degree]},
Text[Style[“O”, FontSize → 14], {-0.5, -1}],
Text[“Koha (min)”, {5, -1}], Text[“2”, {1, -1}],
Text[“4”, {2, -1}], Text[“12”, {6, -1}],
Text[“18”, {9, -1}], Text[“20”, {10, -1}],
Text[“4”, {-1, 1}], Text[“8”, {-1, 2}], Text[“12”, {-1, 3}],
Text[“16”, {-1, 4}], Text[“20”, {-1, -1}]}]

3

The documentation for GridLines is not very clear. By experiment I found

GridLines → {Range[0.5, 6], Range[0, 1.5, 1/2 ]}

.png.png
.png.png395×274 3.7 KB

It seems that the first parameter is the position, the next the number of lines, the third the distance.

By the way: In the “Image add” , Ctrl+G , window there is a “(or drag and drop)” but by no means I get an image implanted except by saving and loading it via file path. (Windows). Is there a trick?, Pasting an image by Ctrl +V, saved to clipboard, into the adress image works at stackexchange.

Regards Roland Franzius