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SChow


Last seen: 11 months 前 |  自 2019 起处于活动状态

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统计学

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make separate table for sets of lat lon that appears x times in a big table.
Hi I have a big table 'A' (attached) and I am trying to make multiple tables out of it. Each for a set of lat and long that appe...

1 year 前 | 1 个回答 | 0

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Find the first appearance of a number in a row.
Hi I have a matrix A from which I need to return a vector which contain the index of first occurence of a number say 2030 such t...

1 year 前 | 1 个回答 | 0

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Buffer around a value in a matrix.
Hi I am struggling with building a buffer of values around a specific value in a matrix. For example I have a matrix A=[ 0 0 0...

2 years 前 | 1 个回答 | 0

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Combine all MODIS 1km tiles for one day and make a global matrix
Hi, I am trying to combine all MODIS 1km tiles (there are 35*17 sinusoidal grid tiles each of size 1200x1200, see https://modis...

2 years 前 | 0 个回答 | 0

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Build a Nonlinear Regression model
Sorry for the very basic question. But I am just trying to figure out the best way to proceed. I have a table (10000*4) with 3 ...

2 years 前 | 1 个回答 | 0

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Match numbers to allocate text
Hi, I am struggling to match numbers to assign a corresponding string. For example, I have an array x=[A 12 B 13 C...

2 years 前 | 2 个回答 | 0

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Circular bar graph in matlab
Hi, I have a table with two columns(headers- Country, Population) and 100 rows. I would like to plot a circular bar graph like i...

2 years 前 | 1 个回答 | 0

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replace values in a matrix by their histogram bin numbers
I have a large matrix 10000x10000 As I draw a histogram by 10 bins, I was wondering if there is a simple way by which I can rep...

3 years 前 | 1 个回答 | 0

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Match folder names with file names and rename the folder
I have a path folder names as follows: ~/directory/2000/land/cities/Muscat/ ~/directory/2000/land/cities/Riyadh/ ..... 1000 ...

3 years 前 | 1 个回答 | 0

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Matching matrices based on two columns
I have two matrices A and B, I am trying to match these by 2 columns of B and when they dont match instert Nan as fill value A=...

3 years 前 | 1 个回答 | 0

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已回答
Keep selected rows in a struct file
%%jn is the array, (not converted to cell array that I was originally %%converting it to , and I should have used square brac...

3 years 前 | 0

| 已接受

提问


Keep selected rows in a struct file
Hello, I have a 600x1 struct file with 5 fields. One of the field is 'labels', containing random numbers from 1 to 1000. and a ...

3 years 前 | 1 个回答 | 0

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match elements of a matrix to an array
Hello, I have one matrix (A1) of size 4000x8000 and the second matrix (g1) of size 100000x2. I am trying to match each number ...

4 years 前 | 1 个回答 | 0

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提问


for loop taking too long to operate
I have a matrices (b1 and popx) with size 25000x50000, code is a vector which contains unique values in b1 (of length 300). For ...

4 years 前 | 1 个回答 | 0

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提问


perform matrix operation without for loop
I have a matrix (exp_data) of size 25000*45000. I need to perform the following operations as in the code, however with the for ...

4 years 前 | 2 个回答 | 0

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Performing matrix operation without loop
Hi, I have two matrices (A and B), each of size, 4000x8000x3 (i,j,k). The 'k th' dimension of both matrix contains median and...

4 years 前 | 2 个回答 | 1

2

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Error in geoshow: (displaytype,'Surface')
pcolorm is an immediate alternative to using geoshow.

4 years 前 | 0

提问


Finding and replacing numbers with NaN
Hello, I have a matrix where the numbers only made up of 9 are fill values and should be replaced by NaN.; For eg: There are n...

4 years 前 | 2 个回答 | 0

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Error in geoshow: (displaytype,'Surface')
Hi I am getting a weird error and the geoshow function is not working with 'Displaytype', 'Surface' and set(gca,'colorscale',...

4 years 前 | 1 个回答 | 0

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Find string corresponding to another string within a text file
Hi, I have a text file, I was trying to read the latitide, longitude and station name corresponding to the associated strings...

4 years 前 | 1 个回答 | 0

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已回答
how to read NASA AMES FORMAT data
Okay, Matlab cannot read .nas files, so one needs rename the .nas files to .txt (or similarly suitable extensions), and then r...

4 years 前 | 0

| 已接受

提问


how to read NASA AMES FORMAT data
I havea data with '.nas' extension (NASA AMES FORMAT). Is there a way to read it. I tried readtable and dlmread. None would work...

4 years 前 | 1 个回答 | 1

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Extrapolate using half the slope than in original data
I have a set of 21 X,Y poinst which I intend to extrapolate by using slope (rate of change)= 1/2 than that is observed in the or...

4 years 前 | 1 个回答 | 0

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Interpolating point LAT,LON data to make gridded data
I have lat,lon,z point values (not gridded), I want to interpolate z at 1.875x1.875 degree resolution. The below code doesnot p...

4 years 前 | 0 个回答 | 0

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Interpolating scattered data within a shapefile/worldmap
Hi I have x,y,zi scattered data, where x is lon, y is lat and zi is the data, I want to interpolate and extrapolate the data wi...

4 years 前 | 1 个回答 | 0

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已回答
How to make the graphs more smooth in matlab
Hi, you may use the print function to save your figure at a desired high resolution print(gcf,'fname.png','-dpng','-r800');%%%f...

5 years 前 | 0

提问


Match strings from 2 tables
Hi, I have 2 tables example: TA= 'Name' 'Code' 'AFG' 120 'CAN' 210 'BER' 121 'FIJ' 910 ...

5 years 前 | 1 个回答 | 0

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Finding matching strings from a table and making a new table
I have a huge table of size 18792010x57 (57) are the number of columns. As an example say the table (T) that looks like: 'A' ...

5 years 前 | 1 个回答 | 0

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Find corresponding values for unique values in a matrix
I have two matrices A and B. I want to add up elements in matrix B for every unique element in matrix A and return C A =[1 47 2...

5 years 前 | 1 个回答 | 0

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Matching elements in a matrix with elements in another matrix
I have a matrix, A=[1 3 4 3 1 5 NaN 3 6] and another index matrix B=[1 333 2 356 3 112 4 789 5 7...

5 years 前 | 1 个回答 | 0

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