Why does the Greek Letter "ν" with esc+n+esc turn into the English letter "v" when used in graphics e.g. labeling a frame? Is there any solution to this, please? Thanks!
Example:
Plot[Sin[x], {x, 0, 5 \[Pi]}, Frame -> True,
FrameLabel -> {"\[Nu]", "\[Lambda]"}]
It is not turned into "v", it is just the way "nu" looks like in the default output font (Arial in my case). Use Style to use another FontFamily, or TraditionalForm.
Style["α β ν", FontFamily -> "Times New Roman"]
TraditionalForm["α β ν"]
Example for your plot:
Plot[Sin[x], {x, 0, 5 Pi}, Frame -> True,
FrameLabel -> {"ν", "λ"},
LabelStyle -> {FontFamily -> "Times New Roman", FontSize -> 20}]
, Frame -> True , FrameLabel -> {StringForm["``", Style[\[Nu], 14, Red, FontFamily -> "Times"]] , StringForm["``", Style[\[Lambda], 14, Blue, FontFamily -> "Times"]]} ]```– Syed Mar 05 '22 at 21:07Plot[Sin[x], {x, 0, 5 \[Pi]} , Frame -> True , FrameLabel -> {Style[\[Nu], 14, Red, FontFamily -> "Times"] , Style[\[Lambda], 14, Blue, FontFamily -> "Times"]} ]– Syed Mar 05 '22 at 21:16{}button above the edit window. The edit window help button?is useful for learning how to format your questions and answers. You may also find the meta Q&A, How to copy code from Mathematica so it looks good on this site, helpful – Michael E2 Mar 05 '22 at 21:42Needs["MaTeX`"]whenever you want to use it. ThenFrameLabel -> {MaTeX["\\nu"], MaTeX["\\lambda"]}gives nice TeX'ed labels. – Michael E2 Mar 05 '22 at 22:00