A think on sum(X, 1)

Posted by Runner on Stack Overflow See other posts from Stack Overflow or by Runner
Published on 2010-04-16T07:19:20Z Indexed on 2010/04/16 7:23 UTC
Read the original article Hit count: 223

Filed under:

matlab

|

dimensions

>> X = [0 1 2
        3 4 5]

>> sum(X, 1)

ans =

     3     5     7

sum(X, 1) should sum along the 1st dimension(row) as per the document says:

S = SUM(X,DIM) sums along the dimension DIM.

But why does it actually sums along the 2nd dimension(column)?

© Stack Overflow or respective owner

Related posts about matlab

Importing matlab functions in matlab

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I have some Matlab functions defined in .m files and I'd like to import them into Matlab (as in I'd like them to form part of the commands). Is this possible please and how can I do this? Thank you very much and regards, Krt_Malta >>> More
c# with matlab dll should be running on pc without matlab

as seen on Stack Overflow - Search for 'Stack Overflow'
hi, i have a very big problem. ich wrote a programm which is using a matlab dll. i build some classes with the matlab .net builder. it runs on my pc :) the problem is, i want to use ist on a pc without matlab. so i installed mcr, but it dont run :( what are the steps i should do? the system variable… >>> More
Matlab and .NET Interaction

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi All! I'm having an issue interacting between Matlab and .NET. I've managed to call .NET methods from Matlab code and vice versa. However, if I call a .NET method that, in turn, instantiates a Matlab object, it crashes (with a type initialization exception). Think about this scenario: a .NET… >>> More
Matlab matrix replacement assignment gives error

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, when i tried to update some part of a matrix, i got the following error message: ??? Assignment has fewer non-singleton rhs dimensions than non-singleton subscripts My code tries to update some values of a matrix that represent a binary image. My code is as follows: outImage(3:5,2:4,1) =… >>> More
MATLAB matrix replacement assignment gives error

as seen on Stack Overflow - Search for 'Stack Overflow'
I tried to update some part of a matrix, I got the following error message: ??? Assignment has fewer non-singleton rhs dimensions than non-singleton subscripts My code tries to update some values of a matrix that represent a binary image. My code is as follows: outImage(3:5,2:4,1) = max(imBinary(3:5… >>> More

Related posts about dimensions

Understanding CUDA grid dimensions, block dimensions and threads organization (simple explanation)

as seen on Stack Overflow - Search for 'Stack Overflow'
How threads are organized to be executed by a GPU? >>> More
Running ubuntu in virtualbox, low screen resolution/dimensions

as seen on Super User - Search for 'Super User'
I am running windows 7 natively, i7 64 bit chipset. ATI radeon hd 4800 series video card. I have virtual box. For some reason, when running ubuntu in virtualbox, the screen rez is like 600x480 (very very small). Is this because ubuntu can't figure out my video card? >>> More
HPCM 11.1.2.2.x - How to find data in an HPCM Standard Costing database

as seen on Oracle Blogs - Search for 'Oracle Blogs'
Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 … >>> More
Setting UIImage dimensions on UITableViewCell image

as seen on Stack Overflow - Search for 'Stack Overflow'
I've got a standard UITableViewCell where I'm using the text and image properties to display a favicon.ico and a label. For the most part, this works really well since UIImage supports the ICO format. However, some sites (like Amazon.com say) have favicon.icos that make use of the ICO format's ability… >>> More
CKEDITOR - prevent adding image dimensions as a css style

as seen on Stack Overflow - Search for 'Stack Overflow'
How to prevent CKEDITOR from adding image dimensions as a style? Instead of this: <img src="image.jpg" style="height:100px; width:100px;"> I want this <img src="image.jpg" height="100px" width="100px"> >>> More