# Daniel Dolan

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Using MATLAB since 1999.

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**12** Questions

**5** Answers

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RANK**2,834** of 19,991

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**Feeds**

How to fix the column width of uitable so the user can't change it?

One pure MATLAB fix is to turn off column labels. It's a bit of a pain, but you can insert text labels above each table column ...

3 months ago | 0

Question

Fix to frequent "Application not responding" for MATLAB on the Mac

I am frequently having the Mac version of MATLAB lock up in "Application not responding", leading to "Force quit" in the Finder ...

3 months ago | 1 answer | 2

### 1

answerIs there a faster complex exponent?

(It's a little tacky answering my own question, but I wanted to synthesize helpful comments from Walter and Bruno). The MATLAB ...

8 months ago | 0

| accepted

Question

Is there a faster complex exponent?

Is there any way to more quickly evaluate complex exponentials, i.e: where Q is a real array? Quick numerical tests show tha...

8 months ago | 2 answers | 0

### 2

answersQuestion

uifigure vector export size/resolution

Suppose I want to export a uifigure to a vector file (*.pdf) at a specific size. The exportgraphics command has a resolution op...

8 months ago | 2 answers | 0

### 2

answersUsing MatLab 2022b, I am .txt files are grayed out when I use 'uigetfile' function on the newest Mac operation system 'Monterey' V 12.6.1

I don't have a complete solution, but it seems that putting *.* up front helps. [fileName,pathName] = uigetfile({'*.*';'*.txt.g...

1 year ago | 0

Where should user preferences be stored?

MATLAB's setpref/getpref commands are the best solution on specific machine, and they persist across sessions.

1 year ago | 0

| accepted

Solved

The Piggy Bank Problem

Given a cylindrical piggy bank with radius g and height y, return the bank's volume. [ g is first input argument.] Bonus though...

3 years ago

Question

Meaning of less/greater than in handle objects

What is the meaning of less/greater than in handle objects? Here is a simple example. classdef SimpleHandle < handle en...

4 years ago | 1 answer | 0

### 1

answerQuestion

What is with all these MATLAB updates?

Why are there so many MATLAB updates lately? There are two formal releases each year, but now it's pretty much a given that one...

4 years ago | 0 answers | 1

### 0

answersSolved

Read a column of numbers and interpolate missing data

Given an input cell array of strings s, pick out the second column and turn it into a row vector of data. Missing data will be i...

4 years ago

Question

MATLAB can't see browser tab created by another tab?

Try opening a website that generates tabs. For example: [status,browser,url]=web( 'http://henke.lbl.gov/optical_constant...

6 years ago | 0 answers | 1

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answersSubmitted

Sandia Data Archive library

Functions for reading, writing, and probing SDA files

7 years ago | 1 download |

uigetfile DialogTitle does not show in file browser

I recently encountered the problem and submitted a bug report. The response was the issue was an operating system problem, not ...

8 years ago | 0

Solved

Remove any row in which a NaN appears

Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

8 years ago

Solved

Weighted average

Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

8 years ago

Solved

Determine whether a vector is monotonically increasing

Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

8 years ago

Solved

Swap the first and last columns

Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

8 years ago

Solved

Pizza!

Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

8 years ago

Solved

Find all elements less than 0 or greater than 10 and replace them with NaN

Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

8 years ago

Solved

Triangle Numbers

Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

8 years ago

Solved

The Hitchhiker's Guide to MATLAB

Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

8 years ago

Solved

Column Removal

Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

8 years ago

Solved

Select every other element of a vector

Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

8 years ago

Solved

Determine if input is odd

Given the input n, return true if n is odd or false if n is even.

8 years ago

Solved

Find the sum of all the numbers of the input vector

Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

8 years ago

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]

In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

8 years ago