BOB
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Accept 5 answers given by other contributors
Awarded to BOB on 22 Aug 2018
Feeds
Question
Assigning variables based on corresponding grid cells traversed by a line on a 2D grid plot
Hi, Assuming I have a 3x3 grid as follows, where the blue line is connecting two points (the red crosses): How would I code ...
ungefär 5 år ago | 0 answers | 0
0
answersQuestion
Rearranging an equation containing the linsolve function
Hi folks, I have used the following equation to determine A: A = linsolve(CoefficientsMatrix,Residuals) For determining A, Co...
mer än 5 år ago | 1 answer | 0
1
answerQuestion
Solve 100 equations, each with a different amount of unknowns in matlab
Hi folks, I have 100 equations which I want to solve simultaneously. There are 9 unknowns (A, B, C, D, E, F, G, H, J). Not eac...
mer än 5 år ago | 1 answer | 0
1
answerQuestion
Why does this code output all values as 1?
Hi there, I'm trying to program a piecewise geometric function into matlab: I have written the code as follows. If anybody ca...
mer än 5 år ago | 2 answers | 0
2
answersQuestion
Principal Component Analysis Reconstructing Centred Data
Hi, I have the following dataset which I have performed PCA on: DATASET = 10.0000 6.0000 11.0000 4.0000 8....
mer än 5 år ago | 1 answer | 0
1
answerQuestion
Find flattest line from matrix of vectors plotted against x values
Hi there, I have a matrix of y-axis coordinates, which I'm plotting against a constant set of x-axis coordinates. I want to det...
nästan 6 år ago | 1 answer | 0
1
answerQuestion
'The 'Start' matrix must have the same number of columns as X.' - Error when using Kmeans
Hi, I want to carry out an iteration of k-means clustering. I am using the tutorial found at https://uk.mathworks.com/help/sta...
nästan 6 år ago | 2 answers | 0
2
answersQuestion
Can't loop k-clustering gap stat function
Hi folks, I want to loop the following function 20 times to determine the mode of the "OptimalK" output from the evalclusters...
nästan 6 år ago | 0 answers | 0
0
answersQuestion
Call first row from zero-padded matrix - only call the non-zero values
Hi folks, I have a zero-padded matrix. I'm aware A(:,1) would call the first row of matrix A, but I want to only call the val...
ungefär 6 år ago | 1 answer | 0
1
answerQuestion
Remove empty rows from matrix
Hi folks, I have the following matrix: 0.6857 0.1248 0.9636 1.0884 0.4807 0.6077 0.3644 0 ...
ungefär 6 år ago | 1 answer | 0
1
answerQuestion
Save variable from each run through of a loop into .mat file?
Hi folks, I have my looped function if true for Z = 1:length(ev_longitude) x1 = -4:10; ...
ungefär 6 år ago | 1 answer | 0
1
answerQuestion
Save variable in workspace but remove from memory?
Hi folks, I've managed to loop my function to (correctly) determine the distance travelled by each line through the grid cell...
ungefär 6 år ago | 1 answer | 0
1
answerQuestion
Convert cell array to two row vector
Hi folks, I have the following cell array: hvix = [2x1 double] [2x8 double] [2x15 double] [2x1 d...
ungefär 6 år ago | 2 answers | 0
2
answersQuestion
Store sets of values as indices in a matrix?
Hi, I have a function which produces a set of horizontal and vertical graph axes intercepts. There are 120 sets of these int...
ungefär 6 år ago | 1 answer | 0
1
answerQuestion
Reshape matrix whilst maintaining pairs ordering
Hi, I have a 2 x 120 matrix which I'm trying to reshape to a 120 x 2 matrix. To do this I'm using the following code: y =...
mer än 6 år ago | 1 answer | 0
1
answerLoop to carry out calculation for pairs 1 and 2, then pairs 2 and 3 and so on.
Cheers folks! Works great.
mer än 6 år ago | 0
Question
Loop to carry out calculation for pairs 1 and 2, then pairs 2 and 3 and so on.
Hi, I have two 8x1 matrices. One matrix is list of longitude coordinates (Final_Longitude_Values). The other matrix is the co...
mer än 6 år ago | 3 answers | 0
3
answersQuestion
Calculate how far a line travels through each square in a grid created using the meshm function
Hi, I have plotted a grid using the meshm function over a map with earthquakes and seismic stations plotted. Between each earthq...
mer än 6 år ago | 0 answers | 0
0
answersQuestion
Overlay a grid on a map
Hi, I have produced a map (using the worldmap function) with latitude limits of 55 to 65 and longitude limits of -5 to 10. I ...
mer än 6 år ago | 0 answers | 0
0
answersQuestion
Plot travel path of earthquake to a seismological station
Hi, I have 4 column vectors: Station latitude, station longitude, earthquake epicentre latitude and earthquake epicentre long...
mer än 6 år ago | 0 answers | 0
0
answersQuestion
Merge two columns of a cell array into one
Hi, I have two columns of cell values: <</matlabcentral/answers/uploaded_files/105933/Untitled.png>> I want to merge t...
mer än 6 år ago | 1 answer | 0
1
answerQuestion
Plotting text on the x-axis for residual analysis
Hi, I want to plot residuals against station name with station name on the x-axis. The x-axis values are in a 192x1 cell arra...
nästan 7 år ago | 1 answer | 0
1
answerQuestion
Determine averages for duplicate values
Hi, I have a cell array (11708 x 1) called "merged" where each value is the station name and the channel. I also have the re...
nästan 7 år ago | 1 answer | 0
1
answerQuestion
Find values outside of a range when calculating residuals.
Hi, I'm trying to find all my residuals above 3 and below minus 3 and extract the corresponding records to an excel sheet. I kno...
nästan 7 år ago | 1 answer | 0
1
answerQuestion
Plot categorical data as data labels on an x,y plot
Hi, I've plotted distance on the x-axis and acceleration on the y-axis. These values are from a string array. Within this...
nästan 7 år ago | 0 answers | 0
0
answersQuestion
Removal of spike at beginning of filtered signal time series plot
Hi, I have several plots of a filtered signal, all of which have a spike at the beginning which I would like to remove. Is th...
ungefär 7 år ago | 1 answer | 0
1
answerQuestion
Sum all answers from structured array field
Hi, I'm trying to sum all values from one field of a structured array: (X(k(1:end)).NumberSamples) ans = 369...
ungefär 7 år ago | 1 answer | 0
1
answer
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