How to format notation to use "... x 10^-5..." instead of "...e..." in this figure

attached figure

Answer 1

[Chunru]

websave("Fig.fig", "https://www.mathworks.com/matlabcentral/answers/uploaded_files/1380189/Fig.fig")

ans = '/users/mss.system.h2XMFA/Fig.fig'

h = openfig("Fig.fig", "visible");
hlegend = get(gca, "legend");
hlegend.String = strrep(hlegend.String, 'e', ' x 10\^')

hlegend = 
  Legend (Dn= 2.6 x 10\^-05, Dn= 3.39 x 10\^-05, Dn= 4.4 x 10\^-05, Dn= 5.56 x 10\^-05) with properties:

         String: {'Dn= 2.6 x 10\^-05'  'Dn= 3.39 x 10\^-05'  'Dn= 4.4 x 10\^-05'  'Dn= 5.56 x 10\^-05'}
       Location: 'northeast'
    Orientation: 'vertical'
       FontSize: 9
       Position: [0.5763 0.7440 0.3094 0.1560]
          Units: 'normalized'

  Show all properties

Answer 2

[Dyuman Joshi]

%Random graph
syms x
fplot(jacobiP(1:4,4,4,x))
axis([-1 2 -5 5])
grid on

%Values to be displayed as the legend
arr = rand(4,1)*1e-4

arr = 4×1

1.0e-04 * 0.3941 0.0632 0.3042 0.5611

out=floor(log10(arr)); %take abs() of arr in case of negative values
str = compose('%f x 10^{%d}', arr./10.^out, out)

str = 4×1 cell array
    {'3.941188 x 10^{-5}'}
    {'6.315990 x 10^{-6}'}
    {'3.042007 x 10^{-5}'}
    {'5.611243 x 10^{-5}'}

legend(str,'Location','best')