Array manipulation in MATLAB

This screencast is all about arrays -- what they are, how to access and modify individual elements and "slices" of an array, how to add rows and columns to a matrix, and the RESHAPE and transpose functions.

[dobraOsoba]

wow, what a perfect way of teaching matlab. Cutting to the essentials. Just seems so efortless. You are really smart for this. I used to hate matlab 20 minutes ago, but not anymore! Thank yoU!

[loupis]

outstanding. I'm about to watch every matlab video you have.

[rufatiwe]

@daDfarSpanTaistheKin @9:03 it's minor omission, it's obvious that the matrix created by reshape is not made by switching the rows and columns and you can compare it to the transpose that is shown later.

These videos are really the best I've seen so far, describing things fast, easy and straightforward.

Many thanks to the author!

[WickedChild]

I find your videos really helpful, thank you for posting them.

[sediye]

this was very helpful, actually life saving. thanks

[MrMerlin]

just what i needed. brilliant tutorial. thank you kind sir

[phil]

Thanks! This helped me get my homework done! I'm well on my way to becoming a mechanical engineer!

[jauresart]

great video, very helpful. Thank you :-)

[johnchristianbaguio]

I wanna say thank you before I end this video.

[dedalosikaros]

I am new to matlab, great work, thank you very much.

[Hemsomrojder]

Hey Robert! First of all I just want to say that your screencasts have been extremely helpful to me. You´ve done a really good job.

I have question about matrix indices:

I have a problem where I want to ask matlab whether or not a specific index in a matrix exists or not, and if it exists I want to perform an operation for that given index. The basic idea can be described by the following "code":

IF A(i, j) "EXISTS"

perform some operation

ELSE
some thing else...
END

Is this possible to do in matlab? I know there are functions which check if a given element exists in a matrix, but I want to check if an index exists. I know matlab might have problems with this because it cant access an entry which doesn´t exist in a given matrix, therefore you get a syntax error warning.

[ccccchar]

you have to input [] ex A=(:, 3)=[] to erase column 3 and same goes to rows but swap A=(3, :)=[]

[MJs-]

i was wondering if using these simple techniques i can assemble a global stiffness matrix using various element matrices while i am working on FEM

[nonamexxx]

How can we give a cumulative relative frequency plot of some array data??

[chanoy]

there a glitch in video thats confusing me, i do appreciate the help though. definitely gonna help me ace my computer programming mid term 

[ccccchar]

what if i want to call a set of position (i, j) for which Aij > (a particular value) ? ie you want to display the positions that their value is smaller than a particular value say 5 ( Aij>5)

[noddyrulezzz]

suppose there there is a matrix of 3x3, i want to read second and third row and place it along with first row...so is there any command which can put up 2nd and 3rd row with 1st one... for eg: there would be a 9 column after reading it...

[nafeesakhan]

how to create table ... 2×1=2
2×2=4 and so on ...?

[na]

can you please help me with this problem "Creating a Game with Animation for Shooting a Ball" how can I generate the ball and the board in Matlab Thanks

[KarausMiller]

Hello, I'm using matlab this semester in college, and it's asking me to call a DoubleDown function with 2 outputs. I'm confused. I enter the variables in and it only spits out one answer. can you offer some assistance with this ?