how to make a legend for a single point

Hi,

I have a problem with making a legend, I have used this code to make a graph:

figure; hold on
for i = 0:0.005:1
C_vm=(1-i)*C_al+i*C_sic;    % i stands for the folume fraction
Cm_1212_voigt=C_vm(4,4)     % for a isotropic material
plot(i,Cm_1212_voigt,'.','color','green')
end

But when I want to make a legend of this graph made of points, I get a legend of all the points on that line. I just want a legend of a single point. How can i make it happen?

Answer 1

[madhan ravi]

h=plot(i,Cm_1212_voigt,'.g') % inside loop
legend(h,'Points') % outside loop

[madhan ravi]

Note:Perhaps the loop is not even necessary. Use some other variable names instead of i and j.

[Thomas Roza]

it works, but how do i edit multiple different points in a graph? in this case it only prints the last legend and not the first, i would like to have them both in the graph?

%% calculation stiffness matrix Voigt
figure; hold on
for i = 0:0.05:1
C_vm=(1-i)*C_al+i*C_sic;    % i stands for the folume fraction
Cm_1212_voigt=C_vm(4,4);     % for a isotropic material
%plot(i,Cm_1212_voigt,'.','color','green')
h=plot(i,Cm_1212_voigt,'.g') % inside loop
end
legend(h,'voigt') % outside loop

%% calculation stiffness matrix Reuss
for i = 0:0.05:1
C_rm=inv((1-i)*inv(C_al)+i*inv(C_sic));
Cm_1212_reuss=C_rm(4,4);
r=plot(i,Cm_1212_reuss,'.r')
end
legend(r,'reuss')

[madhan ravi]

You put some random code with missing datas and you ask one question. With a hunch an answer is being given and after a while another comment again with missing datas and then you expect an answer by magic?