# Praveen Iyyappan Valsala

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Solved

Summing digits

Given n, find the sum of the digits that make up 2^n. Example: Input n = 7 Output b = 11 since 2^7 = 128, and 1 + ...

1 year ago

Plot handle to return single object

You can use set function. hraw_mean.set('Visible','off'); That sets Visible proptery of all cells to off. If you want to set ...

2 years ago | 0

| accepted

Surface plot above a non-rectangular region

You can simply create a binary mask of the polygon region and set all Z values to NaN outside the mask. NaN values are not plott...

2 years ago | 1

| accepted

Add text above grouped bars

'%%' is the escape sequence for percentage symbol as shown here. sprintfc('%.1f %%', ydt(k1,:))

2 years ago | 0

| accepted

Solved

Interpolator

You have a two vectors, a and b. They are monotonic and the same length. Given a value, va, where va is between a(1) and a(end...

2 years ago

Solved

Read a column of numbers and interpolate missing data

Given an input cell array of strings s, pick out the second column and turn it into a row vector of data. Missing data will be i...

2 years ago

How can i make a partition matrix

If you want to list all possible partitions. Not suitable for large k. randoms = 0.1:0.1:0.9; %Index of all permutations wi...

2 years ago | 0

Distinct sum of 3 variable which ranges between 1-255

I didn't understand your way for making the sum unique. This dirty code gives you 255 (x,y,z) whose sums are unique. sumArr=-1*...

2 years ago | 1

how to call functions properly: Index in position 1 is invalid. Array indices must be positive integers or logical values.

In your runge function, f is a string not a function. k1=eval(strcat(f,'(t(i),y(:,i));'));%f(t(i),y(:,i)); %here is where ...

2 years ago | 1

| accepted

Help with plotting 3d function

Most intuitive way is to add another loop to sum up function outputs of all n. for i=1 : length(x) for j=1 : length(t) ...

2 years ago | 0

Random display of 'even' or 'odd'

Pi has equal distribution of all digits i.e odd and even digits are uniformly distributed. so you can simply use rand function w...

2 years ago | 0

Facing problem in generating a mex file

Could be because of the spaces in the file paths. Try encapsulating them in double quotes. mex generateEllipseCandidates.cpp -I...

2 years ago | 0

Trapezoidal pulse generation using gensig() function

The answer is No! .I am not aware of any function which can do that for you. Try to adapt my function for your needs or write yo...

2 years ago | 1

| accepted

Submitted

StructSearch(input_struct,search_term)

searches and returns details and child struct with matching parameters.

3 years ago | 2 downloads |

Question

Any function to get a short description of a variable just like the Value column in workspace?.

I have a struct with >4000 members/fields. I am writing a search function to find some matching members and displaying them alon...

3 years ago | 1 answer | 0

### 1

answerI want to reduce accuracy and precision to 3 digits.

I don't know any inbulit function which can do that. But, you can try something like below trun=@(num,Ndigits)floor(a*10^Nd...

3 years ago | 1