% the 1st dimension becomes the 3rd, so that each 'page' is a regular The version below loops through each page via arrayfun (which is only faster than a normal loop for large matrices) and calls diag on each page: % 'flip' the array, so that 3rd dimension becomes the 1st (rows), and When you're used to the ease with which you manipulate matrices/vectors, this will seem really clumsy, backward and not very convenient at all (there's actually very defendable reasons for that, but that's a discussion for another time :). Here we discuss the Introduction to MATLAB Indexing and its different Examples as well as its input and output.MATLAB is pretty good with vectors and matrices, but when it comes to 'general arrays' you'll often have to switch to 'general methods'. As an additional feature, indexing can also be used to compare values of arrays. We can use indexing to obtain the value present at any desired location in an array. In this article, we have learnt how the indexing works in MATLAB. For the values in вЂXвЂ™, which are greater than вЂYвЂ™, the output array has a вЂ0вЂ™.

0 showing value in X is not less than Y at that particular cell and 1 showing that value at X is less than Y.ДЄs we can clearly see in the output above, we have obtained a вЂ1вЂ™ for all values in вЂXвЂ™ which are less than corresponding values in вЂYвЂ™. X = Y = We will pass the condition X < Y, to find out the elements in X, which are less than elements in Y.The output, in this case, will be an array of 0s and 1s. ylabel ( ,Name,Value) modifies the label appearance using one or more name-value pair arguments. ylabel (target,txt) adds the label to the specified target object. Reissuing the ylabel command causes the new label to replace the old label. In the scenario where we want to know which all elements of an array X are greater than or less than another array Y, we can use this feature of indexing.ДЄll we need to do is pass the вЂвЂ™ sign between these 2 arrays as per our requirement. ylabel (txt) labels the y -axis of the current axes or standalone visualization. Let us understand how this can be achieved. It is also possible to index arrays based on logical operators. So, if we need all the elements of 4 th row, we just need to pass. Example #4ДЄnother way of using the index is to access all elements of a particular row or column.ДЇor this, we will pass just the row or column number whose elements we require. The output is an array with 1 st, 2 nd, and 3 rd row selected, with elements from the 2 nd and 3 rd columns. In the next scenario, let us assume that we need to get elements from the 1 st row till the 3 rd row, and from the 2 nd column till the 3 rd column.ДЇor this purpose, we will specify the index range that we are looking for and will separate row and column ranges by a вЂcolonвЂ™. All we did is passed the indices of required elements with the help of a vector to MATLAB.

For our understanding, let us try to get the 3rd and 4th element of 3rd row.ДЄs we can clearly see in the output, we are able to get the 3 rd and 4 th elements of the 3 rd row, i.e, 11 and 2. We will use the same array as above for this example. You do not need to complete this step if you are simply plotting a basic function like y sin (x). Let us now take the scenario where we want to reference more than one element of a row. The window should look like this: 3 Create a new Function file. 7 is selected from the input array Example #2 X = ДЄs we can clearly see in the output, only the value present at position (2, 3), i.e. This is how our input and output will look like in MATLAB console: The Output that we obtain will be a single value present at the position (2, 3) in the array X. The Syntax that we will use in MATLAB is:

Fgrab in matlab