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Christopher Saltonstall


Last seen: 5 days ago |  Active since 2017

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How to open H.265 video?
I colelcted some video data that was compressed using h.265 and I am having trouble opening it with any video editor and Matlab....

29 days ago | 0 answers | 0

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answers

Question


Read/Write memory of Xilinx FPGA using Matlab and Vivado
I have a Xilinx Kintex 7 FPGA that is is connected via USB JTAG to my computer. I would like to read the memory of the FPGA. C...

1 year ago | 1 answer | 0

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answer

Question


Failed to download the third-party software: FTDI JTAG D2XX library
I am trying to install the HDL Verifier Support Package for Xilinx FPGA Boards. When I try to install through the add-on explor...

1 year ago | 1 answer | 0

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answer

Answered
Convert System.Decimal from C# .NET to double
load 'pos.mat' import System.* methodsview('System.Decimal') System.Decimal.ToDouble(pos)

1 year ago | 0

| accepted

Question


Convert System.Decimal from C# .NET to double
I am communicating with a Thorlabs DC servo controller via .NET. When I query the motor position it returns the value in system...

1 year ago | 1 answer | 0

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answer

Answered
How to plot the 3D mesh created by meshgrid?
Here is an example of plotting data that was created using the "meshgrid" function of the attached data. You can also find the ...

2 years ago | 1

Answered
How can I turn time series data into a spatial map?
Answer: Use "griddata" and "meshgrid" functions as shown below. clear close all %% Get experimental data path = 'C:\'; ...

2 years ago | 0

| accepted

Question


How can I turn time series data into a spatial map?
Motivation: I am building a microscope to scan a laser across patterned surfaces to map the surface. The most intuitive method ...

2 years ago | 1 answer | 0

1

answer

Question


Read Binary Data from Keysight DMM
I am trying to read voltage measurements from a Keysight 34465A digital multimeter. When the data format is set to ASCII I can ...

2 years ago | 0 answers | 0

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Answered
How does binblockread work? How can I modify it to read multiple binary blocks simultaneously?
Solved in the attached script. clear close all %% USER INPUTS %voltage or current reading voltcurr = 'VOLT'; %binary...

3 years ago | 0

| accepted

Question


How does binblockread work? How can I modify it to read multiple binary blocks simultaneously?
I am trying to read the binary output of 4-channels from a Keysight N6705C power analyzer. In order to do this I query all 4 ch...

3 years ago | 1 answer | 0

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answer

Answered
Use fscanf to Read Binary Data from Keysight Power Analyzer with Unknown Length
So, it turns out that "fscanf" should only be used to read ASCII data as described here. Instead "binblockread" or "readbinbloc...

3 years ago | 1

| accepted

Question


Use fscanf to Read Binary Data from Keysight Power Analyzer with Unknown Length
I am communicating with a Keysight N6705C Power analyzer and trying to read data from a buffer that is continuously collecting ...

3 years ago | 2 answers | 0

2

answers

Question


How to Select GUI axes?
Hello, I am trying to create a GUI where I load an image and then select points on the image using ginput. However, when I run...

4 years ago | 1 answer | 0

1

answer

Question


Make Network Licence Available Offline
I am currently using a license through my company that requires an active connection to our internal network to use. However, t...

4 years ago | 1 answer | 0

1

answer

Answered
How to use freqz to plot filter frequency response?
Its is because the frequency response, h, is a complex value. By plotting, plot(f,h) only the real (in-phase) component is pl...

4 years ago | 1

| accepted

Question


How to use freqz to plot filter frequency response?
I used systemIdentification to calculate the transfer function of my filter (see first figure) and then saved the idtf variable ...

4 years ago | 1 answer | 0

1

answer

Question


Determine filter function from input and output signals
I have an known input signal that I am putting through a "black box" resulting in an experimentally measured output signal. I w...

4 years ago | 0 answers | 0

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answers

Question


Plot with two related x-axes
This question may seem like it has been answered in the forums but I believe there is a subtlety that has not been directly answ...

4 years ago | 1 answer | 0

1

answer

Question


How to fit built in filter functions
I have a signal (e.g. square wave) that I am passing through a "black box" resulting in a modified output signal (e.g. saw tooth...

4 years ago | 0 answers | 0

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answers

Question


Pass deviceObj between callbacks in app
I am able to make VISA-USB connection in one callback but want to maintain this connection and pass the device object between ca...

4 years ago | 0 answers | 0

0

answers

Question


Parallel Computing with Command Line Scripts
I am using Matlab as a wrapper code to run a windows exe. Currently, I am writting input files for the exe with Matlab. Then w...

5 years ago | 0 answers | 0

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answers

Question


Plot with 2 corresponding x-axes
This question may seem like it has been answered in the forums but I believe there is a subtlety that has not been directly answ...

6 years ago | 1 answer | 0

1

answer

Question


How to create gradient of randomly spaced data at each point of input array
I have a set of data, y, with non-uniformly spaced independent variable, x. I want to calculate the gradient of this data at ea...

6 years ago | 2 answers | 0

2

answers

Question


Create Legend From Array
Hello, I have an array nN = 6; N = 1:nN; I want to make a legend where nN changes and so may not be known ahead of t...

7 years ago | 2 answers | 0

2

answers

Question


Matlab Hangs when Saving Surf to PDF
I am having trouble saving a surface plot as a pdf. This used to work for me just fine. However, now when I try, Matlab hangs ...

7 years ago | 0 answers | 0

0

answers

Question


Saving Pdf Surf Hangs
Hello, When I try to save a surf plot as a pdf Matlab hangs up and my disk usage jumps to 99% in task manager. However, when...

7 years ago | 1 answer | 0

1

answer

Question


How to create array of linearly spaced values from starting and ending points
Hello, I want to create an array (not vector) of linearly space points from a vector of starting and ending points. For exam...

7 years ago | 3 answers | 0

3

answers

Answered
Efficiently Read in Text file with Headers Throughout File
This solution works great if you know the length of data between headers. I had to write a code to determine this from the GULP...

8 years ago | 1

| accepted

Question


Efficiently Read in Text file with Headers Throughout File
Hello, I am trying to read dispersion outputs from the GULP lattice dynamics program. The format of the output file is shown...

8 years ago | 3 answers | 0

3

answers