How can I add a comment on a curve ?

Hello

How can I add a comment on curve like Sc Model on the attached curve ?

How can I obtain the dark green (not 'g') ?

Best regards

P31 = [1.43436165089259e-06;1.43374766282421e-05;0.000142762885117782;0.000424250225827408;0.000563002478050165;0.000700445374077970;0.000836592402772030;0.000971456893169736;0.00110505201663249;0.00136848607248207;0.00162699686730859;0.00175443735421301;0.00188068430746190;0.00200574985219740;0.00212964597195751;0.00225238451055365;0.00237397717392035;0.00249443553193791;0.00261377102022809;0.00374779137589255;0.00478117199423086;0.00572338762862873;0.00658290260475480;0.00736729179956388;0.00808334563511983;0.00873716137866576;0.00933422268977868;0.00987946906116776;0.0103773565523935;0.0108319110077304;0.0112467747740984;0.0116252477870651;0.0119703237678987;0.0122847221688105;0.0128311589059730;0.0130675032083378;0.0144598912865357;0.0147934635095272;0.0146280450178580;0.0142271493397784;0.0137214852616019;0.0137214852616019;0.0131780725811443;0.0121005290573215];
R_matrix = [0.1e3;1e3;1e4;3e4;4e4;5e4;6e4;7e4;8e4;1e5;1.2e5;1.3e5;1.4e5;1.5e5;1.6e5;1.7e5;1.8e5;1.9e5;2e5;3e5;4e5;5e5;6e5;7e5;8e5;9e5;1e6;1.1e6;1.2e6;1.3e6;1.4e6;1.5e6;1.6e6;1.7e6;1.9e6;2e6;3e6;4e6;5e6;6e6;7e6;7e6;8e6;1e7];
loglog(R_matrix, P31) % Color dark green not green 'g' ?

[madhan ravi]

Alex I suggest you to move your comment to answer section.

Answer 1

[Star Strider]

You could use an annotation (link) object (that I find difficult to use because of the coordinate system they require), or you could do something like this:

P31 = [1.43436165089259e-06;1.43374766282421e-05;0.000142762885117782;0.000424250225827408;0.000563002478050165;0.000700445374077970;0.000836592402772030;0.000971456893169736;0.00110505201663249;0.00136848607248207;0.00162699686730859;0.00175443735421301;0.00188068430746190;0.00200574985219740;0.00212964597195751;0.00225238451055365;0.00237397717392035;0.00249443553193791;0.00261377102022809;0.00374779137589255;0.00478117199423086;0.00572338762862873;0.00658290260475480;0.00736729179956388;0.00808334563511983;0.00873716137866576;0.00933422268977868;0.00987946906116776;0.0103773565523935;0.0108319110077304;0.0112467747740984;0.0116252477870651;0.0119703237678987;0.0122847221688105;0.0128311589059730;0.0130675032083378;0.0144598912865357;0.0147934635095272;0.0146280450178580;0.0142271493397784;0.0137214852616019;0.0137214852616019;0.0131780725811443;0.0121005290573215];
R_matrix = [0.1e3;1e3;1e4;3e4;4e4;5e4;6e4;7e4;8e4;1e5;1.2e5;1.3e5;1.4e5;1.5e5;1.6e5;1.7e5;1.8e5;1.9e5;2e5;3e5;4e5;5e5;6e5;7e5;8e5;9e5;1e6;1.1e6;1.2e6;1.3e6;1.4e6;1.5e6;1.6e6;1.7e6;1.9e6;2e6;3e6;4e6;5e6;6e6;7e6;7e6;8e6;1e7];
loglog(R_matrix, P31, 'Color',[0.6 0.6 0.1], 'LineWidth',2) 
text(5E+4, 2E-3, {'This Curve'; '\downarrow'}, 'HorizontalAlignment','center')

[Mallouli Marwa]

If I want to display two curves with two colors , I obtain the same color

How can I change it ?

plot (x,y,'c',P31, 'Color',[0.6 0.6 0.1], 'LineWidth',2)

[Mallouli Marwa]

If I want to display two curves having same color but different aspect like

plot (x,y,'b',x2,y2,'b--')

How can I do using this color [0.6 0.6 0.1] with different aspect of line ?

[Star Strider]

Use the hold (link) function to plot different data and colours on the same axes.

Answer 2

[Alex Mcaulley]

How can I add a comment on curve like Sc Model on the attached curve ?

https://es.mathworks.com/help/matlab/ref/text.html

How can I obtain the dark green (not 'g') ?

loglog(R_matrix, P31,'Color',[R G B])

https://es.mathworks.com/help/matlab/ref/matlab.graphics.chart.primitive.line-properties.html

[Mallouli Marwa]

Thanks a lot

If I have to plot two curves and a comment on one curve, it doesn't display

plot (x,y,'y',x1,y2,'b')
text(2,5,'this curve 1')

Please help me

Answer 3

[Nitin Phadkule]

x=0:1:100;
y=x.^2

y = 1×101

0 1 4 9 16 25 36 49 64 81 100 121 144 169 196 225 256 289 324 361 400 441 484 529 576 625 676 729 784 841

x1=-100:2:10;
y2=x1.^2

y2 = 1×56

10000 9604 9216 8836 8464 8100 7744 7396 7056 6724 6400 6084 5776 5476 5184 4900 4624 4356 4096 3844 3600 3364 3136 2916 2704 2500 2304 2116 1936 1764

plot (x,y,x1,y2)
text(20,5000,' this curve 1 \rightarrow')