MATLAB: How to add a label to a specific point on a fplot

datapointsfplotgraph

I have the graph fplot(M_G) shown below.

how do I label the point where the y-axis = 0. The actual x-value at y = 0 is 0.5607 but i do not know how to label it

Best Answer

This command will add a text label with a leftward arrow pointing to the coordinates

text(0.5607, 0, '\leftarrow My Favorite Point'))

or maybe you want a cross hairs at that point

xline(0.5607)
yline(0)

or maybe a simple marker that is defined in the legend

hold on 
plot(0.5607, 0, 'r*', 'displayName', 'My Favorite Point')
legend()

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MATLAB: How to get the equation and display on the graph for line of best fit

Try this

x=[0.200 0.100 0.067 0.050 0.040 0.033 0.025];
y=[0.214 0.158 0.130 0.125 0.136 0.115 0.107];
axis([0 0.025 0 0.025]);
plot(x,y,'x');
hold on
title('lineweaver-burk plot');
xlabel('1/S');
ylabel('1/Vo ');
fig = figure(2);
ax = axes();
scatter(x,y);
%Plotting the line of best fit 
p=polyfit(x,y,1);
x1=linspace(min(x), max(x), 100);
y1=polyval(p,x1);
plot(x1,y1,'r-', 'LineWidth',3);
X_int = roots (p);
y_int = p(2);
eq_str = sprintf('y = %.2fx + %.2f', p);
text(min(x)+0.02, max(y)-0.01, eq_str, ... % An example of setting the position
    'FontSize', 16)

MATLAB: From a matrix, Pick one element from each row and not from same column for all possibilities. Only for non zero elements.

Hi,

Your requirements are answered in a similar question mentioned in this link. Also, selecting set of elements from a matrix such that each element comes from distinct row and column can also be modeled as a Matching problem. (graph theory)

Best Answer

Related Solutions

MATLAB: How to get the equation and display on the graph for line of best fit

MATLAB: From a matrix, Pick one element from each row and not from same column for all possibilities. Only for non zero elements.

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