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Martha


Last seen: etwa 4 Jahre vor |  Aktiv seit 2014

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Find combinations without repetitions from a given set
Hi All, I have a matrix b of size 119x42, I'm trying to find the combinations without repetitions, that results in a vector o...

fast 6 Jahre vor | 1 Antwort | 0

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Constraints not satisfied with 'ga' solver and integer variables
Hi all, I've been struggling to understand what is the problem with my code. I wrote this long time ago, and now I'm using it...

mehr als 6 Jahre vor | 1 Antwort | 1

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Issues with solve. Cannot solve symbolically. Returning a numeric approximation instead.
Hi there, I'm trying to use 'solve' for 'a' by using 'syms' but I think it always retrieve an answer even if it didn't solve...

fast 7 Jahre vor | 1 Antwort | 0

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Why does FMINCON finds a solution even when constraints are not satisfied?
Hi, I'm using FMINCON solver as I need to set up Nonlinear 'OR' constraints (similar to this:http://uk.mathworks.com/help/opt...

fast 8 Jahre vor | 1 Antwort | 0

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Error with nested function to output history x values of FMINCON
Hello, I want to retrieve the values of x at each iteration of an optimization routine using FMINCON. I've defined a nested fu...

mehr als 8 Jahre vor | 0 Antworten | 0

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How to use more than one variable as an input for a NonLinear Constraint function with FMINCON
Hello, I have an optimization problem where the number of constraints are subjected to the length of one variable. I'm writin...

mehr als 8 Jahre vor | 1 Antwort | 0

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Error with FMINCON - Failure in initial user-supplied objective function evaluation
Hi everybody, I'm trying to run an optimization problem with FMINCON, but I keep getting the following error: Error usin...

mehr als 8 Jahre vor | 1 Antwort | 0

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How to assign gradual color to a 3d line based on values of another vector
Hi all, I want to assign colour to lines plotted between 3dpoints, based on the values of a fourth vector. The values of the f...

mehr als 8 Jahre vor | 1 Antwort | 0

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Exponential Curve fit data a & b
Thank you both for the answers, Martha

mehr als 9 Jahre vor | 0

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Exponential Curve fit data a & b
Hi, I'm trying to run a script automatically, and at some point I need to plot an exponential curve into a set of x and y data. ...

mehr als 9 Jahre vor | 3 Antworten | 0

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How to create a mask on an image and have the background white?
Hi, I create a mask into an image and I did this: i=roipoly(f1,p1,p2); mask=repmat(i,[1,1,3]); f1(~mask)=1; imshow(f1) ...

fast 10 Jahre vor | 1 Antwort | 0

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Accesing data in a three dimensional matrix using a for loop
Hi, I want to create a for loop to go through each of the pages (20) of a matrix 400x600x20 (called polygons). The matrices 4...

fast 10 Jahre vor | 1 Antwort | 0

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Three dimensional arrays with poly2mask in each page
Hi, I need to create several poly2mask that are of size 612x924 I'm trying to do that with a for loop, I create a matrix 612...

fast 10 Jahre vor | 2 Antworten | 0

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How to flip only some rows inside a matrix?
Hi, I have a matrix xx which is a 6x20 matrix, and I want to flip only the even rows. Im trying this but is doesn't work: ...

fast 10 Jahre vor | 3 Antworten | 0

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How to divide a line into several parts and obtain the coordinates?
Hi, I want to create a small script that can allow me to divide a line into segments and then retrieve me the coordinates of t...

fast 10 Jahre vor | 2 Antworten | 0

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Select all points inside a polygon to create a new matrix
Hi, I have a point cloud matrix x,y and I want to create a new matrix with all the points that are inside a polygon to create a...

mehr als 10 Jahre vor | 2 Antworten | 0

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How to select all the elements of a point cloud that are aligned at +-45 degrees?
Hi, I have a point cloud in x,y,z coordinates its shape is rectangular, and I want to select all the elements that are near a l...

mehr als 10 Jahre vor | 0 Antworten | 0

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Beantwortet
How to select element of an array between two values?
Thanks Walter, Both work very well! Do you know also how to do the same but with several columns?, That is, having < 2800 x ...

mehr als 10 Jahre vor | 0

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How to select element of an array between two values?
Hi, I have an array of 2800 elements < 2800 x 1 double >, and I want to create a new array only with the values that are grea...

mehr als 10 Jahre vor | 2 Antworten | 0

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How to create a vector from a random point cloud?
Hi, I have a point cloud in coordinates 'x' and 'y'. x<4794x588> and y<4794x588>. In general the shape of the point cloud is a ...

mehr als 10 Jahre vor | 2 Antworten | 0

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How to join several matrices into one matrix?
Hello, I have a variable in a form of a matrix but repeat several times, 4794 rows, 1 column and 588 files, e.g. 4794x1x588 d...

mehr als 10 Jahre vor | 2 Antworten | 1

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How to change the sign of a whole vector?
Hi, I want to plot the displacements from a compressive test, but my data is in negative sign. I have a vector like this but ...

mehr als 10 Jahre vor | 1 Antwort | 0

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