BOB

Actif depuis 2017

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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 ...

presque 6 ans il y a | 1 réponse | 0

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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...

plus de 6 ans il y a | 1 réponse | 0

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Question

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...

plus de 6 ans il y a | 1 réponse | 0

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Question

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...

plus de 6 ans il y a | 2 réponses | 0

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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....

plus de 6 ans il y a | 1 réponse | 0

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Question

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...

plus de 6 ans il y a | 1 réponse | 0

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'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...

plus de 6 ans il y a | 2 réponses | 0

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Question

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...

presque 7 ans il y a | 1 réponse | 0

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Question

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...

environ 7 ans il y a | 1 réponse | 0

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Question

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 ...

environ 7 ans il y a | 1 réponse | 0

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Question

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; ...

environ 7 ans il y a | 1 réponse | 0

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Question

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...

environ 7 ans il y a | 1 réponse | 0

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Question

Convert cell array to two row vector
Hi folks, I have the following cell array: hvix = [2x1 double] [2x8 double] [2x15 double] [2x1 d...

environ 7 ans il y a | 2 réponses | 0

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Question

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...

environ 7 ans il y a | 1 réponse | 0

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Question

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 =...

environ 7 ans il y a | 1 réponse | 0

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Réponse apportée
Loop to carry out calculation for pairs 1 and 2, then pairs 2 and 3 and so on.
Cheers folks! Works great.

environ 7 ans il y a | 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...

environ 7 ans il y a | 3 réponses | 0

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réponses

Question

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...

environ 7 ans il y a | 1 réponse | 0

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Question

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 ...

plus de 7 ans il y a | 1 réponse | 0

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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...

plus de 7 ans il y a | 1 réponse | 0

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Question

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...

plus de 7 ans il y a | 1 réponse | 0

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Question

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...

presque 8 ans il y a | 1 réponse | 0

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Question

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...

presque 8 ans il y a | 1 réponse | 0

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Question

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...

presque 8 ans il y a | 1 réponse | 0

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Question

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...

presque 8 ans il y a | 1 réponse | 0

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Question

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...

presque 8 ans il y a | 1 réponse | 0

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Question

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...

presque 8 ans il y a | 1 réponse | 0

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