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I have this code:

basep = Plot[{p[x, y, t, baseta, f, basefa, baseul]*150}, {x, 0, basexhat}, PlotLabel -> "Rental price per m^2", PlotStyle -> {Opacity[0.5]}]
baseq = Plot[{q[x, y, t, baseta, f, basefa, baseul]}, {x, 0, basexhat}, PlotLabel -> "Dwelling size", PlotStyle -> {Opacity[0.5]}]
baser = Plot[{r[x, y, t, baseta, f, basefa, baseul]*150}, {x, 0, basexhat}, PlotLabel -> "Land rental price per m^2", PlotStyle -> {Opacity[0.5]}]
baseh = Plot[{h[x, y, t, baseta, f, basefa, baseul]}, {x, 0, basexhat}, PlotLabel -> "Floor to area ratio", PlotStyle -> {Opacity[0.5]}]
baseDen = Plot[{Den[x, y, t, baseta, f, basefa, baseul]*10}, {x, 0, basexhat}, PlotLabel -> "Population density", PlotStyle -> {Opacity[0.5]}]
baseL = Plot[{L[x, y, t, baseta, f, basefa, baseul]/1000}, {x, 0, basexhat}, PlotLabel -> "Population (1000s)", PlotStyle -> {Opacity[0.5]}, Epilog -> {Dashed, LightBlue, 
    Line[{{basexhat, 0}, {basexhat, 600}}], Dashed, LightBlue, 
    Line[{{lastxhat, 0}, {lastxhat, 600}}]}]
lastp = Plot[{p[x, y, t, lastta, f, lastfa, lastul]*150}, {x, 0, lastxhat}, PlotLabel -> "Rental price per m^2"]
lastq = Plot[{q[x, y, t, lastta, f, lastfa, lastul]}, {x, 0, lastxhat}, PlotLabel -> "Dwelling size"]
lastr = Plot[{r[x, y, t, lastta, f, lastfa, lastul]*150}, {x, 0, lastxhat}, PlotLabel -> "Land rental price per m^2"]
lasth = Plot[{h[x, y, t, lastta, f, lastfa, lastul]}, {x, 0, lastxhat}, PlotLabel -> "Floor to area ratio"]
lastDen = Plot[{Den[x, y, t, lastta, f, lastfa, lastul]*10}, {x, 0, lastxhat}, PlotLabel -> "Population density"]
lastL = Plot[{L[x, y, t, lastta, f, lastfa, lastul]/1000}, {x, 0, lastxhat}, PlotLabel -> "Population (1000s)"]


ResourceFunction["PlotGrid"][{
  {Show[basep, lastp, PlotRange -> {{0, 25}, All}, Frame -> True],
   Show[baseq, lastq, PlotRange -> {{0, 25}, {73, 78}}, 
    AxesOrigin -> {0, 0}, Frame -> True, 
    FrameTicks -> {{None, All}, {None, None}}]},
  {Show[baser, lastr, PlotRange -> {{0, 25}, All}, Frame -> True],
   Show[baseh, lasth, PlotRange -> {{0, 25}, All}, Frame -> True, 
    FrameTicks -> {{None, All}, {None, None}}]},
  {Show[baseDen, lastDen, PlotRange -> {{0, 25}, All}, Frame -> True],
   Show[baseL, lastL, PlotRange -> {{0, 25}, All}, Frame -> True, 
    FrameTicks -> {{None, All}, {None, None}}]}}] 

And I get this beautiful grid:

enter image description here

Except the labels are in odd locations. How do I move them within the graphs?

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8
  • $\begingroup$ In each Plot use Epilog option to add Text where you want it. $\endgroup$
    – Bob Hanlon
    Sep 29, 2022 at 13:35
  • $\begingroup$ @BobHanlon In one of the graphs I have two Epilogs: (how do I show this as code?) Epilog -> {Dashed, LightBlue, Line[{{basexhat, 0}, {basexhat, 600}}], Dashed, LightBlue, Line[{{lastxhat, 0}, {lastxhat, 600}}]}] Do I add a new Epilog after I or do I write it inside the {} or outside the {}? $\endgroup$ Sep 29, 2022 at 13:43
  • $\begingroup$ You only need one Epilog per Plot, it can contain everything. Epilog -> {Text[lbl, pos], ...} $\endgroup$
    – Bob Hanlon
    Sep 29, 2022 at 13:47
  • $\begingroup$ Similar to 153339. $\endgroup$
    – Syed
    Sep 29, 2022 at 13:59
  • $\begingroup$ @BobHanlon That worked. Is there a way I can change the font to be the same as the PlotLabel in terms of font, size and color? $\endgroup$ Sep 29, 2022 at 14:05

1 Answer 1

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In addition to the Epilog based solution suggested by @BobHanlon in the comments, ResourceFunction["PlotGrid"] also supports labeling via the PlotLabels option and Labeled wrappers:

First, your plots with some dummy functions:

basexhat = 25;
lastxhat = 20;

basep = Plot[{x*150}, {x, 0, basexhat}, PlotStyle -> {Opacity[0.5]}];
baseq = Plot[{x}, {x, 0, basexhat}, PlotStyle -> {Opacity[0.5]}];
baser = Plot[{x*150}, {x, 0, basexhat}, PlotStyle -> {Opacity[0.5]}];
baseh = Plot[{x}, {x, 0, basexhat}, PlotStyle -> {Opacity[0.5]}];
baseDen = Plot[{x*10}, {x, 0, basexhat}, PlotStyle -> {Opacity[0.5]}];
baseL = Plot[{x/1000}, {x, 0, basexhat}, PlotStyle -> {Opacity[0.5]}, 
   Epilog -> {Dashed, LightBlue, 
     Line[{{basexhat, 0}, {basexhat, 600}}], Dashed, LightBlue, 
     Line[{{lastxhat, 0}, {lastxhat, 600}}]}];
lastp = Plot[{2 + x*150}, {x, 0, lastxhat}];
lastq = Plot[{2 + x}, {x, 0, lastxhat}];
lastr = Plot[{2 + x*150}, {x, 0, lastxhat}];
lasth = Plot[{2 + x}, {x, 0, lastxhat}];
lastDen = Plot[{2 + x*10}, {x, 0, lastxhat}];
lastL = Plot[{2 + x/1000}, {x, 0, lastxhat}];

grid = {{
    Show[basep, lastp, PlotRange -> {{0, 25}, All}, Frame -> True],
    Show[baseq, lastq, PlotRange -> {{0, 25}, {73, 78}}, 
     AxesOrigin -> {0, 0}, Frame -> True, 
     FrameTicks -> {{None, All}, {None, None}}]
    }, {
    Show[baser, lastr, PlotRange -> {{0, 25}, All}, Frame -> True],
    Show[baseh, lasth, PlotRange -> {{0, 25}, All}, Frame -> True, 
     FrameTicks -> {{None, All}, {None, None}}]
    }, {
    Show[baseDen, lastDen, PlotRange -> {{0, 25}, All}, Frame -> True],
    Show[baseL, lastL, PlotRange -> {{0, 25}, All}, Frame -> True, 
     FrameTicks -> {{None, All}, {None, None}}]
    }};

You can now add labels to the plots by specifying them via the PlotLabels option:

ResourceFunction["PlotGrid"][grid,
 PlotLabels -> {"Rental price per m^2", "Dwelling size", 
   "Land rental price per m^2", "Floor to area ratio", 
   "Population density", "Population (1000s)"}
 ]

enter image description here

This puts them into the default position which is {Left,Top}. To put them into the center, use a Placed wrapper:

ResourceFunction["PlotGrid"][
 grid,
 PlotLabels -> 
  Placed[{"Rental price per m^2", "Dwelling size", 
    "Land rental price per m^2", "Floor to area ratio", 
    "Population density", "Population (1000s)"}, {Center, Top}],
 LabelStyle -> {Red, FontSize -> 14}
 ]

enter image description here

Notice how I have also applied a custom style via the LabelStyle option.

Finally, you can also used Labeled[plot, label, position] for the indiviual plots to specify the labels:

ResourceFunction["PlotGrid"][{
  {
   Labeled[
    Show[basep, lastp, PlotRange -> {{0, 25}, All}, Frame -> True], 
    "Rental price per m^2", {Center, Top}],
   Labeled[
    Show[baseq, lastq, PlotRange -> {{0, 25}, {73, 78}}, 
     AxesOrigin -> {0, 0}, Frame -> True, 
     FrameTicks -> {{None, All}, {None, None}}], 
    "Dwelling size", {Center, Top}]
   }, {
   Labeled[
    Show[baser, lastr, PlotRange -> {{0, 25}, All}, Frame -> True], 
    "Land rental price per m^2", {Center, Top}],
   Labeled[
    Show[baseh, lasth, PlotRange -> {{0, 25}, All}, Frame -> True, 
     FrameTicks -> {{None, All}, {None, None}}], 
    "Floor to area ratio", {Center, Top}]
   }, {
   Labeled[
    Show[baseDen, lastDen, PlotRange -> {{0, 25}, All}, 
     Frame -> True], "Population density", {Center, Top}],
   Labeled[
    Show[baseL, lastL, PlotRange -> {{0, 25}, All}, Frame -> True, 
     FrameTicks -> {{None, All}, {None, None}}], 
    "Population (1000s)", {Center, Top}]
   }},
 LabelStyle -> {Red, FontSize -> 14}
 ]

(* same result *)

(Notice how every Show[...] expression is wrapped in a Labeled expression with the appropriate label and position specified)

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