You are now following this question
- You will see updates in your followed content feed.
- You may receive emails, depending on your communication preferences.
Matlab cannot produce result
1 view (last 30 days)
Show older comments
.
function Y = myFunction(d,n,theta)
Y = coinflip(100,100,0.25);
d = 100;
n = 100;
theta = 0.25;
Y = [ ];
for Dloop = 1:d
for Nloop = 1:n
X =randn(1);
Y = [Y;X];
end
end
Y(Y<theta) = 0;
Y(Y>theta) = 1;
histogram(Y)
(I get some errors as below -)
function Y = myFunction(d,n,theta)
↑
Error: Function definition not supported in this context.
Create functions in code file.
(another error is as below)
Error in myFunction (line 2)
Y = coinflip(100,100,0.25);
(other error is as below)
Y = coinflip(100,100,0.25);
Undefined function or variable 'coinflip'.
.
Here please help me to modify the errors and able to produce one correct output graph
.
15 Comments
sloppydisk
on 4 May 2018
The error messages are very descriptive. You cannot create a function in the command window and coinflip is not defined.
You probably meant to do this:
d= 100;
n = 100;
theta = 0.25;
output = coinflip(d,n,theta);
function Y = coinflip(d,n,theta)
Y = zeros(d*n, 1);
for Nloop = 1:n
for Dloop = 1:d
Y(Nloop*Dloop) = rand;
end
end
Y(Y<theta) = 0;
Y(Y>theta) = 1;
histogram(Y)
end
You should also preallocate Y as I showed. Not sure why you want a nested for loop or what your plans are though.
sloppydisk
on 4 May 2018
That's because you pasted it into the command window. You can't define functions in there, so instead you should save the code as an m-file and execute it in the editor.
Image Analyst
on 4 May 2018
Then define it. It's not built into MATLAB, so you need to define what that function does.
sloppydisk
on 4 May 2018
Much love to you my man, but I hope you will adopt a better attitude, because I don't think you're going to learn much this way.
Image Analyst
on 4 May 2018
He already did help you and wrote some code that seems like it does what you want to do. I ran it (the attached code) and it ran fine. What did you do differently????
sloppydisk
on 4 May 2018
He pasted it into the command window :D
vokoyo
on 4 May 2018
Edited: vokoyo
on 4 May 2018
function Y = myFunction(d,n,theta)
Y = coinflip(100,100,0.25);
d = 100;
n = 100;
theta = 0.25;
Y = [ ];
for Dloop = 1:d
for Nloop = 1:n
X = randn(1);
Y = [Y;X];
end
end
Y(Y<theta) = 0;
Y(Y>theta) = 1;
histogram(Y)
Now I can run but the output graph why show some negative numbers?
Image Analyst
on 5 May 2018
There are no negative numbers. There is a bar centered at 0 with 8000 counts, and one centered at 1 with 2000 counts. If you want the x axis to show only the bar centers, then add this line as the last line of your coinflip() function:
xticks(0:1)
vokoyo
on 5 May 2018
Edited: vokoyo
on 5 May 2018
Matlab Programming - I am not sure how to modify it to get the two graphs in Question 2
(1)
function Y = myFunction(d,n,theta)
Y = coinflip(100,100,0.25);
d = 100;
n = 100;
theta = 0.25;
Y = [ ];
for Dloop = 1:d
for Nloop = 1:n
X =rand(1);
Y = [Y;X];
end
end
Y(Y<theta) = 0;
Y(Y>theta) = 1;
histogram(Y)
xticks(0:1)
function Y = myFunction(d,n,theta)
Y = coinflip(100,100,0.5);
d = 100;
n = 100;
theta = 0.5;
Y = [ ];
for Dloop = 1:d
for Nloop = 1:n
X =rand(1);
Y = [Y;X];
end
end
Y(Y<theta) = 0;
Y(Y>theta) = 1;
histogram(Y)
xticks(0:1)
(2)
function Y = myFunction(d,n,theta)
Y = coinflip(10,1000,0.25);
d = 10;
n = 1000;
theta = 0.25;
Y = [ ];
for Dloop = 1:d
for Nloop = 1:n
X =rand(1);
Y = [Y;X];
end
end
Y(Y<theta) = 0;
Y(Y>theta) = 1;
histogram(Y)
xticks(0:1)
function Y = myFunction(d,n,theta)
Y = coinflip(10,1000,0.5);
d = 10;
n = 1000;
theta = 0.5;
Y = [ ];
for Dloop = 1:d
for Nloop = 1:n
X =rand(1);
Y = [Y;X];
end
end
Y(Y<theta) = 0;
Y(Y>theta) = 1;
histogram(Y)
xticks(0:1)
(3)
function Y = myFunction(d,n,theta)
Y = coinflip(100,1000,0.25);
d = 100;
n = 1000;
theta = 0.25;
Y = [ ];
for Dloop = 1:d
for Nloop = 1:n
X =rand(1);
Y = [Y;X];
end
end
Y(Y<theta) = 0;
Y(Y>theta) = 1;
histogram(Y)
xticks(0:1)
function Y = myFunction(d,n,theta)
Y = coinflip(100,1000,0.5);
d = 100;
n = 1000;
theta = 0.5;
Y = [ ];
for Dloop = 1:d
for Nloop = 1:n
X =rand(1);
Y = [Y;X];
end
end
Y(Y<theta) = 0;
Y(Y>theta) = 1;
histogram(Y)
xticks(0:1)
Answers (0)
See Also
Categories
Find more on Environment and Settings in Help Center and File Exchange
Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!An Error Occurred
Unable to complete the action because of changes made to the page. Reload the page to see its updated state.
Select a Web Site
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list
How to Get Best Site Performance
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)
Asia Pacific
- Australia (English)
- India (English)
- New Zealand (English)
- 中国
- 日本Japanese (日本語)
- 한국Korean (한국어)