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trailokya


Indian Inst of Tech Delhi

Active since 2014

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How to get daily minimum value of temperature from a three dimensional matrix?
Let us say we have a matrix (say 'a') with 129x135x721 dimension.i.e.lat x lon x time... time is 720 (24*30)for hourly data for ...

8 years ago | 2 answers | 0

2

answers

Question


how to count non nan values
Sir in a vector of large dimension say (750,1) which has NaNs as well as some values. I want to count the non nan values. would ...

8 years ago | 1 answer | 0

1

answer

Question


how to do the latitudinal average from a matrix?
Sir, i have a matrix of three dimension say m(80*80*28)i.e. latitude*longitude*altitude...i need the latitude average so that t...

8 years ago | 1 answer | 0

1

answer

Question


How to plot 4D contourf for the matrix C(40*40) with respect to A(40*40) as x axis and B(40*40) as y axis for different levels z=1000, 800, 600, 400 in one plot?
Dear Sir I have three matrices A,B and C having same size 40*40. I want to plot a contour of C(40*40) taking A(40*40) as x axis...

9 years ago | 1 answer | 0

1

answer

Question


How to determine average and standard deviation of y axis values for corresponding bin of x axis?
Sir i have two data series say a b 25.36737061 -27.47956892 20.54391479 -23.68162398 16.76391...

9 years ago | 1 answer | 0

1

answer

Question


How to bin for scatter plot from two data series?
Sir i have two data series say a b 25.36737061 -27.47956892 20.54391479 -23.68162398 16.76391602...

9 years ago | 1 answer | 0

1

answer

Question


How to count negative and postive values in a matrix?
Sir, how can i get the mean and standard deviation and total numbers of negative values and similarly for positive values in a m...

9 years ago | 1 answer | 1

1

answer

Question


How can I extract a sub matrix B from a matrix A??
Sir, I have a two dimensional matrix of dimension 129*135 say A(129,135) and the elements are basically for x-y plot where x=66....

9 years ago | 1 answer | 0

1

answer

Question


How to extract a sub matrix from a matrix?
Sir, I have a two dimensional matrix of dimension 129*135 say A(129,135) and the elements are basically for x-y plot where x=66....

9 years ago | 0 answers | 0

0

answers

Question


how do i count NaNs in a vectors or array??
Sir I have a vector say A=[5,5,6,NaN,NaN,8,10,5,7,3,NaN,11,5,3,8,9,7,NaN,NaN,NaN,NaN,NaN] and i want to count the numb...

10 years ago | 2 answers | 0

2

answers

Question


how to ignore nan values in corr function?
sir, i have a three dimensional matrix say A(129*135*33). I have to find out the correlation coefficient along the third dimensi...

10 years ago | 1 answer | 0

1

answer

Question


how to find out the time interval between two consecutive events?
sir, i need to find out the time interval between two consecutive events. i have around 4000 data with increasing numbers but no...

10 years ago | 2 answers | 0

2

answers

Question


How to ignore NaN values in gamma distribution?
Sir I want to fit my data with gamma distribution. If i want to find out the constants 'a' and 'b' by 'gamfit' with my data wher...

10 years ago | 0 answers | 0

0

answers

Question


How to concatenate 4000 matrices in matlab?
sir i have around 4000 .csv files of dimension 129*135 in a folder. i want concatenate all the files. Is it possible in matlab? ...

10 years ago | 1 answer | 0

1

answer

Question


how to reduce the resolution of a matrix?
I have a matrix of dimension 140*140. i want to make it to dimension 35*35 by averaging grids. how can i do it in a simpler way?...

10 years ago | 2 answers | 0

2

answers

Question


how to resize a matrix?
I have a matrix A of dimension 129*135. I want to make it 135*135 by adding some NaN values. How is it possible in a simple way?...

10 years ago | 2 answers | 0

2

answers