Octave Programming Examples

Execute MATLAB/Octave Online

octave

x=[0 0.0005 0.00102 0.00146 0.0023 0.0031 0.005 0.007 0.01 0.049 0.125 0.218 0.234 0.306 0.33 0.348    0.36 0.366]
y=[0 102.3 204.7 293.5 272.9 264 268.9 267.6 264 318.6 372 394.4 395 384.2 360.4 327.5 290 266.8]

title('ENGINEERING STRESS-STRAIN DIAGRAM') 
stairs(x,y)

xlabel('STRAIN,e')
ylabel('STRESS,s')

print -dpng figure.png

stress-strain

octave

x=[0 0.0005 0.00102 0.00146 0.0023 0.0031 0.005 0.007 0.01 0.049 0.125 0.218 0.234 0.306 0.33 0.348    0.36 0.366]
y=[0 102.3 204.7 293.5 272.9 264 268.9 267.6 264 318.6 372 394.4 395 384.2 360.4 327.5 290 266.8]

title('ENGINEERING STRESS-STRAIN DIAGRAM') 

plot(x,y)

xlabel('STRAIN,e')
ylabel('STRESS,s')

print -dpng figure.png

SQUARE PLOT

octave

x = [1 2 3 4 5 6 7 8 9 10];
for i=1:10
y(i)=x(i)*x(i);
end
scatter(x,y);
line(x,y);
title('plot title');
xlabel('x axis');
ylabel('y axis');

print -dpng figure.png

SEMILOGY

octave

x=[0 0.0005 0.00102 0.00146 0.0023 0.0031 0.005 0.007 0.01 0.049 0.125 0.218 0.234 0.306 0.33 0.348 0.36 0.366]
y=[0 102.3 204.7 293.5 272.9 264 268.9 267.6 264 318.6 372 394.4 395 384.2 360.4 327.5 290 266.8]
semilogy(x,y);
stairs(x,y);
scatter(x,y);
line(x,y);
area(x,y);
ar=area(x,y);
title('plot stress strain curve');
xlabel('x axis');
ylabel('y axis');

print -dpng figure.png

classes

octave

Classdef human;
%bmi of human;
properties;
h.name;
h.weight;
h.height;
h.age;
function bmi=human(p);
bmi=p.weight/(p.height*p.height);
p.age =p.height*p.height*25;
p.weight-p.age;
print -dpng figure.png;

Ex1-2

octave

t = -40:40;
x = t == 0;
plot(t,x);
grid;
title('Plot title');
xlabel('X Axis');
ylabel('Y Axis');

print -dpng figure.png

4vdshfeda

octave

x = [0.55:0.17:16];
y=((cos(x)).^2+(sin(x)).^2)/x.^3;
plot(y,x)

triangle

octave

x=[1 2 3 4 5 6 7 8 9 10]
for i=1:10
   if (rem(i,2)==0)
   y(i)=1
   
   
   else
   y(i)=0
   
   
   end
   
   
     end
     scatter(x,y);
     line(x,y);
     title('plot title');
     xlabel('x axis');
     ylabel('y axis');
     
     print dpng figure.png

Execute MATLAB/Octave Online

octave

x=[
0
0.0005
0.00102
0.00146
0.0023
0.0031
0.005
0.00698
0.00995
0.0478
0.1178
0.1972
0.2103
0.3572
0.5298
0.7218
0.9308
1.0909


];
y=[0
0.102381013
0.204762026
0.2936355
0.2730672
0.264164503
0.269076336
0.267694883
0.264164503
0.334782939
0.390875603
0.480034361
0.480781205
0.549357079
0.612433599
0.674498164
0.735868292
0.794624736


];


line(x,y);


title('stress vs strain');
xlabel('X Axis');
ylabel('Y Axis');

print -dpng figure.png

LOGARITHMIC FUNCTION

octave

x=[0 0.0005 0.00102 0.00146 0.0023 0.0031 0.005 0.007 0.01 0.049 0.125 0.218 0.234 0.306 0.33 0.348 0.36 0.366];
y=[0 102.3 204.7 293.5 272.9 264 268.9 267.6 264 318.6 372 394.4 395 384.2 360.4 327.5 290 266.8];

loglog(x,y);
title(' sress srtain curve');
xlabel('strain');
ylabel('stress');

print -dpng figure.png

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