1,631 total contributions since 2005

Matt is currently employed at Sunnyside Risk Assessments, LLC in the beautiful Florida panhandle. Fishing and running are my favorite things to do, besides programming.

Professional Interests: MATLAB, C++

Submitted

Fast View Factor Computation

Computes the view factors for two 3D planer polygons

2 years ago | 2 downloads |

Answered

Display rational numbers using fprintf

T = 1/3; fprintf('The number is: %s\n',strtrim(rats(T)))

Display rational numbers using fprintf

T = 1/3; fprintf('The number is: %s\n',strtrim(rats(T)))

5 years ago | 0

| accepted

Answered

Faster way of writing this code: (finding index)

That code does not return an index, but it does return the number of values in vector quantiles that are smaller than input.

Faster way of writing this code: (finding index)

That code does not return an index, but it does return the number of values in vector quantiles that are smaller than input.

6 years ago | 0

Answered

Breaking Quotes for Printmat

If I were you I would just use FPRINTF to print your array. I would offer you an example, but I don't know what you mean by "Is ...

Breaking Quotes for Printmat

If I were you I would just use FPRINTF to print your array. I would offer you an example, but I don't know what you mean by "Is ...

6 years ago | 0

Answered

Create a matrix with Special properties

V0 = 10; a = 5; V1 = V0 + randi([-100 140]) + a; V2 = V1 + randi([-100 140]) + a; matrix = [V0,randi([-100 140]),a...

Create a matrix with Special properties

V0 = 10; a = 5; V1 = V0 + randi([-100 140]) + a; V2 = V1 + randi([-100 140]) + a; matrix = [V0,randi([-100 140]),a...

6 years ago | 0

| accepted

Answered

index exceeds matrix dimention

What is the Q doing there? We need to see code that we can copy/paste and *_it will run_*. So please fill in the missing varia...

index exceeds matrix dimention

What is the Q doing there? We need to see code that we can copy/paste and *_it will run_*. So please fill in the missing varia...

6 years ago | 0

Answered

A simple question about working with array matrix and converting a column to multiple columns

reshape(X,50,12) Or perhaps reshape(X,12,50).'

A simple question about working with array matrix and converting a column to multiple columns

reshape(X,50,12) Or perhaps reshape(X,12,50).'

6 years ago | 1

| accepted

Answered

adding breakpoint to program slows it down a factor of 250x

It makes sense to me that MATLAB would be slower when you are debugging. So what is the big deal? You won't be in debug mode o...

adding breakpoint to program slows it down a factor of 250x

It makes sense to me that MATLAB would be slower when you are debugging. So what is the big deal? You won't be in debug mode o...

6 years ago | 0

| accepted

Answered

I need help with the Matlab R2007b commands

If you have MATLAB installed then you can look at the documentation by typing: docsearch('image processing toolbox') The...

I need help with the Matlab R2007b commands

If you have MATLAB installed then you can look at the documentation by typing: docsearch('image processing toolbox') The...

6 years ago | 0

Answered

how to enable rotate3d for guide axes?

Use the command: rotated3d on After the code that plots the surf.

how to enable rotate3d for guide axes?

Use the command: rotated3d on After the code that plots the surf.

6 years ago | 0

Answered

Problem Saving Workspace - No Error Message

Of course, it would be immenseley helpful, and might actually allow a solution to be put forward, if you describe *in detail* wh...

Problem Saving Workspace - No Error Message

Of course, it would be immenseley helpful, and might actually allow a solution to be put forward, if you describe *in detail* wh...

6 years ago | 0

Answered

Concatenate cells: making column and row headers

row={'cat1'; 'cat2'; 'cat3'}; col={'mouse1' 'mouse2' 'mouse3'}; figure t = uitable('Data',[],... 'Colu...

Concatenate cells: making column and row headers

row={'cat1'; 'cat2'; 'cat3'}; col={'mouse1' 'mouse2' 'mouse3'}; figure t = uitable('Data',[],... 'Colu...

6 years ago | 0

Answered

[GUI] How do you fill a Listbox with documents from a specific folder

The most basic example... D = dir; uicontrol('style','list',... 'units','pix',... 'pos',[20 20...

[GUI] How do you fill a Listbox with documents from a specific folder

The most basic example... D = dir; uicontrol('style','list',... 'units','pix',... 'pos',[20 20...

6 years ago | 0

| accepted

Answered

About matrix: how to make matrix binary (0 and 1)

S = dec2bin((1:32).') % If a string is o.k. N = S - '0' % If you need a numeric matrix.

About matrix: how to make matrix binary (0 and 1)

S = dec2bin((1:32).') % If a string is o.k. N = S - '0' % If you need a numeric matrix.

6 years ago | 0

Answered

i want to plot the graph between the probability of false alarm and probability of detection

# Format your code. # Give a description of what it does and what is wrong # State _clearly_ what you need it to do.

i want to plot the graph between the probability of false alarm and probability of detection

# Format your code. # Give a description of what it does and what is wrong # State _clearly_ what you need it to do.

6 years ago | 0

Answered

How can i create a standard matlab template for new programs

You could put that code in an m-file then use COPYFILE to copy it to a new m-file, including the intended name. Say your abov...

How can i create a standard matlab template for new programs

You could put that code in an m-file then use COPYFILE to copy it to a new m-file, including the intended name. Say your abov...

6 years ago | 0

| accepted

Answered

what is difference in cell and structure plz tell me with example

There is good documentation on this, did you read: doc cell doc struct Here is a cell array: C{1} = magic(3)...

what is difference in cell and structure plz tell me with example

There is good documentation on this, did you read: doc cell doc struct Here is a cell array: C{1} = magic(3)...

6 years ago | 1

Answered

Error in Quad, suggestions required ?

Don't mix inlines with symbolics this way. syms E m R T f1 = int((0.99954.*E + ((0.58058-0.044967.*m).*R.*T))./(E + (2...

Error in Quad, suggestions required ?

Don't mix inlines with symbolics this way. syms E m R T f1 = int((0.99954.*E + ((0.58058-0.044967.*m).*R.*T))./(E + (2...

6 years ago | 0

Answered

plot of specified data

a=[1;1;1;1;2;2;2;3;3;3;3;4;4;4;4;4;5;5;5]; b=[20;21;22;24;20;22;24;21;19;20;22;23;24;19;23;19;24;23;22]; c=[2;5;1;3;1;3;...

plot of specified data

a=[1;1;1;1;2;2;2;3;3;3;3;4;4;4;4;4;5;5;5]; b=[20;21;22;24;20;22;24;21;19;20;22;23;24;19;23;19;24;23;22]; c=[2;5;1;3;1;3;...

6 years ago | 0

| accepted

Answered

Quick way to find the point where a vector changes from increasing to decreasing.

D = [10,9,7,5,3,2,1,2,3,5,7]; V = [0 diff(D)>0] % Indicates sign of difference S = find(V,1,'first') % First index whe...

Quick way to find the point where a vector changes from increasing to decreasing.

D = [10,9,7,5,3,2,1,2,3,5,7]; V = [0 diff(D)>0] % Indicates sign of difference S = find(V,1,'first') % First index whe...

6 years ago | 0

| accepted

Answered

Quotes around the name of the function

Typically, you want to pass a handle to a function, not a string. fsovle(@myfun,x0) % Notice the @ symbol --> a function h...

Quotes around the name of the function

Typically, you want to pass a handle to a function, not a string. fsovle(@myfun,x0) % Notice the @ symbol --> a function h...

6 years ago | 0

| accepted

Answered

How to solve a simple if loop

# There is no such thing as an IF loop. # IF statements do not filter elements out of an array. # MATLAB does not use a THEN k...

How to solve a simple if loop

# There is no such thing as an IF loop. # IF statements do not filter elements out of an array. # MATLAB does not use a THEN k...

6 years ago | 1

| accepted

Answered

Aborting callback execution in GUI - Drawnow error

I am not sure why you are using errors to try to cancel an operation. It seems simpler to just have the cancel button set a fla...

Aborting callback execution in GUI - Drawnow error

I am not sure why you are using errors to try to cancel an operation. It seems simpler to just have the cancel button set a fla...

6 years ago | 0

| accepted

Answered

GUI pop-up menu and push buttons

There are many ways to do this. Here is a simple example that may provide a skeleton for you to fill out. function [] = ...

GUI pop-up menu and push buttons

There are many ways to do this. Here is a simple example that may provide a skeleton for you to fill out. function [] = ...

6 years ago | 0

Answered

Is there a way to label a plot with angled text?

You might give <http://www.mathworks.com/matlabcentral/fileexchange/27812-rotate-x-axis-tick-labels this file exchange file a tr...

Is there a way to label a plot with angled text?

You might give <http://www.mathworks.com/matlabcentral/fileexchange/27812-rotate-x-axis-tick-labels this file exchange file a tr...

6 years ago | 0

| accepted

Answered

[co,fig] = gcbo does not work in slider listener

Use FINDALL. fig = findall(0,'type','figure','tag','myfiguretag')

[co,fig] = gcbo does not work in slider listener

Use FINDALL. fig = findall(0,'type','figure','tag','myfiguretag')

6 years ago | 0

Answered

Hello, I am trying to fit some data points with an exponential equation.

>> X = sort(rand(1,10)*30); % Say this is our x data. >> Y = 14*exp(3*X); % Say this is _unknown_ equation. >> pp = po...

Hello, I am trying to fit some data points with an exponential equation.

>> X = sort(rand(1,10)*30); % Say this is our x data. >> Y = 14*exp(3*X); % Say this is _unknown_ equation. >> pp = po...

6 years ago | 0

Answered

Convert (x,y) data into a function y => f(x)

You could use POLYFIT, or the curve fitting toolbox or a simple interpolation. >> x = 0:.25:5; >> y = x.^2; >> f = ...

Convert (x,y) data into a function y => f(x)

You could use POLYFIT, or the curve fitting toolbox or a simple interpolation. >> x = 0:.25:5; >> y = x.^2; >> f = ...

6 years ago | 1

| accepted

Answered

regexprep - may the replacement string contain a variable?

Does this work? regexprep(str, '(xx\(i,)BE(\))', ['$1',q,'$2'] )

regexprep - may the replacement string contain a variable?

Does this work? regexprep(str, '(xx\(i,)BE(\))', ['$1',q,'$2'] )

6 years ago | 0

| accepted

Answered

How do I write a script for a GUI.m file that allows me to press a button, choose a (*.csv) file and then copy this (*.csv) file to the current folder so it can be used for an existing simulation?

You need to make complete pathnames. One way to do it is to concatenate the output from UIGETFILE and also to concatenate the d...

How do I write a script for a GUI.m file that allows me to press a button, choose a (*.csv) file and then copy this (*.csv) file to the current folder so it can be used for an existing simulation?

You need to make complete pathnames. One way to do it is to concatenate the output from UIGETFILE and also to concatenate the d...

6 years ago | 0

| accepted