David Gillcrist
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Computational Mathematics Ph.D. student
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Awarded to David Gillcrist on 26 Apr 2023
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Awarded to David Gillcrist on 05 Dec 2022
Feeds
Frage
Trying to increase the maximum width of OuterPosition (plot is cut off)
I have the following code f = figure(); f.Units = "inches"; f.OuterPosition = [0 0 7 2.5] ax1 = axes(f,'Units','inches','Pos...
etwa ein Monat vor | 0 Antworten | 0
0
AntwortenFrage
Apply colormap coloring to a particular contour to indicate imaginary component
I have a set of data , , , related via a function , where the data stored in are complex valued. I want to make a contour plot ...
etwa 2 Monate vor | 1 Antwort | 0
1
AntwortFrage
Get quiver plot arrows to connect up contour lines
I have the following code here that plots a contour plot for a given function and also plots a color-indicated directional field...
etwa 2 Monate vor | 2 Antworten | 0
2
AntwortenFrage
How to get the value of slopes of pchip at the enpoints?
I'm using pchip to interpolate a set of data X. After getting the interpolation, I'm trying to have functions g and f, connect t...
3 Monate vor | 2 Antworten | 1
2
AntwortenFrage
Can't get proper numerical convergence for complicated Advection-Diffusion-Reaction PDE
I have written an advection-diffusion-reaction PDE using a Crank-Nicolson finite difference scheme. The detail of which and the ...
5 Monate vor | 0 Antworten | 0
0
AntwortenUsing angdiff with pdist2 for angle data
I found a solution. I defined a new function called delta = myAngDiff(alpha,beta) which takes is expected to take a single v...
7 Monate vor | 0
| akzeptiert
Frage
Using angdiff with pdist2 for angle data
I have two sets of data phi1 and phi2, and I'd like to know what the pairwise distances are for these two sets. I've tried apply...
7 Monate vor | 1 Antwort | 0
1
AntwortFrage
Take the product of two probability density function histograms generated from data
I have two different sets of data $D_1$ and $D_2$ both of which have data between two values $a$ and $b$. I know I can get the h...
7 Monate vor | 1 Antwort | 0
1
AntwortFrage
Best way to count outputs for a 2D polynomial function along the curve of an implicit equation
I have a 2D polynomial function given by , I also I have a contour for this function . I would like find what the distribution o...
7 Monate vor | 1 Antwort | 0
1
AntwortFrage
Is there a MATLAB official way to increase/decrease line length/icon size in legends?
I'm making a a plot where the legend is quite long, here is minimal working example plot(rand(4)) lgd = legend(["Directional D...
8 Monate vor | 1 Antwort | 0
1
AntwortFrage
Integrate polar histogram values about a certain value
I have a set of directional (circular) data, and I also have the mean value of this data. I need to find out how to integrate th...
8 Monate vor | 1 Antwort | 0
1
AntwortFrage
Most efficient way to put vector on the off-diagonal of the blocks of a block matrix
I have two vectors each of the same length, and I want to put these vectors on the diagonal parts of each block of a matrix. Let...
11 Monate vor | 3 Antworten | 0
3
AntwortenFrage
How can I write an array to a txt file such that it looks like MATLAB syntax
If I have an array, for example A = [1 2 3 4; -1 0 1 2; 3 9 5 7; 12 100 1000 1012]; How can I write this to a text file...
12 Monate vor | 1 Antwort | 0
1
AntwortFrage
How to save a function handle to a .m file
If I create a function via inline, e.g. myfunc = @(x,y,z) x.^2+y+z How can I save this as a matlab file function? I can do thi...
12 Monate vor | 2 Antworten | 0
2
AntwortenFrage
How to sort the rows of an array by the total number of zeros in the row
I have any array where each row is a unique vector index, I want to sort the array so that column by column the numbers increase...
etwa ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
How to get around sparse row deletion for least squares calculation
I have an alrogithm that repeats a reduced basis calculation for a sparse block digaonal matrix Psi. Here Psi is composed of d ...
etwa ein Jahr vor | 2 Antworten | 0
2
AntwortenFrage
Assigning values to a vector out of order in parallel (parfor)
I have a code where I'm trying to assign chunks of values to a vector out of order in a parfor loop, where the placement is dete...
etwa ein Jahr vor | 1 Antwort | 0
1
AntwortAssign a row vector to a row of an array using logical indexing to omit certain values
I feel embarassed to answer my own question only a short while after giving it some though, but the solution is quite simple rea...
etwa ein Jahr vor | 0
| akzeptiert
Frage
Assign a row vector to a row of an array using logical indexing to omit certain values
I have a function, , that outputs a vector of numerical values, I also have two matrices, , the former matrix is an array of zer...
etwa ein Jahr vor | 3 Antworten | 0
3
AntwortenFrage
How to write as symbolic piecewise function with conditions on a symbolic vector
I have a symbolic vector, and I want to define a function that is an parabola if the vector is inside a hyper cube of length 2 ...
etwa ein Jahr vor | 2 Antworten | 0
2
AntwortenFrage
How to save an indefinite number of outputs to a struct
I have a function that depending on the number of inputs I give it, it will give the same number of outputs. I want a way that I...
mehr als ein Jahr vor | 2 Antworten | 0
2
AntwortenFrage
Best way to speed up (parallelize) a large function that take three large 3D arrays as input
I have a function that I generated that is the doubled integral evaluated via trapezoidal rule using 1000 segments of another fu...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
The order of accuracy for my Crank-Nicolson scheme is wrong.
I've been trying to figure out what the issue is in my numerical scheme I've written to solve the particle in the box problem fo...
mehr als 2 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
How can I declare an implicit variable, y(t), after I have used it in a symbolically defined function?
I'm writing a scheme that solves an ODE and in doing so I declare a symbolic function: syms t y(t) f = t^(-2) * (sin(2*t) - 2*...
etwa 3 Jahre vor | 0 Antworten | 0
0
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