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Geoff Hayes


Last seen: Today
3,057 2014 이후 총 참여 횟수

Professional Interests: Software Engineering, Target Tracking, Video Streaming apps

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why should we multiply the number of samples with sound frequency to calculate the sine wave?
joly - I think that t is usually a time array (in seconds). From fft examples, t can be initialized as Fs = 1000; % ...

약 16시간 전 | 0

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Why can't it proceed to the next iteration of for 'runs' loop?
mrbond99 - please look at the condition for the while loop while m > 0 You will only enter this loop so long as m is positive....

약 16시간 전 | 0

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Appending different size arrays each itteration in app desinger
remco - you could perhaps create a member variable for your App and then update that variable with the y on each call to the tim...

약 18시간 전 | 0

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Move-File: Can't move certain Files to another Folder!
Malte - you haven't posted the error message or describe fully what you mean by I don't get it to work. According to movefile in...

약 18시간 전 | 1

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Displaying video file on App Designer Axes
Zachary - please see the example found at Read Video Using Frame Index and Time Interchangeably. I suspect that you could do som...

4일 전 | 0

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Find function can not find vector element index
You can't use the equality operator == with doubles. See Floating-Point Numbers for details. Instead you need to use a tolerance...

5일 전 | 0

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Why function crashes when using conditional statements?
Tara - try replacing the switch with an if and use a tolerance check (note that using a switch statement for doubles or floats w...

5일 전 | 0

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Using AppDesigner with FileSystemWatcher
Summary of issue: from Create event listener bound to event source it shows that the call to addlistener returns an object. In t...

7일 전 | 0

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Filter Table with Generalized Values
Neeraj - how about trying something like filteredTable = t(t.Age == 20 & strcmp(t.Gender, 'F'), :) or are you hoping for somet...

8일 전 | 0

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Image Processing in GUI Error
Muhammad - please post the full error message (so all of the red text) so we can narrow down which line of the callback is gener...

11일 전 | 1

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Though the code is pretty simple, still the value of theta remains 0 every time I execute the results with different values of w,x,y,z,u and v. The value of theta doesn't change anytime.
Srinjoy - the problem is that you are using the equality operator when comparing floats. Look at your conditions for the if/else...

12일 전 | 1

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HERE RESTful API - POST - Fleet Telematics
Sridhar - the 400 error code indicates (if I recall correctly) that there is a problem with your request. I see that you call w...

13일 전 | 0

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Single Figure Animation of moving points (without tails)
Luca - use set to modify the x and y data of the plot. Replace your for loop with the following hPlot = plot(NaN, NaN, 'db'); ...

14일 전 | 1

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Why is my plot not showing?
Tony - your code is not calling the TranMat function which has the code to plot the data. How should it be called? What do the a...

15일 전 | 0

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fopen status for serial objects
Could you use a try catch block to try to open the serial object and then, if there is an error, take the appropriate action giv...

18일 전 | 0

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Can sfit objects be plotted to specific axis in GUI (not a figure window)?
Giorgio - from Plot cfit or sfit object, the code to plot the sf object would be plot(sf, 'Parent', app.Map) . When you try to...

21일 전 | 1

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Nested If-ELSEIF statements
Hans123 - do you really need nested if-elseif blocks to change the extreme points? Wouldn't you just do them for x, y, and z sep...

21일 전 | 0

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why i am getting error while using editable text in guide?
Ajay - look closely at the results from which uicontrol --all: C:\Users\ajayr\Documents\MATLAB\uicontrol.m built-in ...... % s...

21일 전 | 1

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how to open a file from the previous folder
Alajendro - you should be able to use pwd to determine the current folder, and then "navigate" up one directory to A and then do...

25일 전 | 0

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How can I update the plot in App designer?
Rasheed - i might use a timer to update the plot (or animated line) and then whenever the "Update" push button is called, the up...

25일 전 | 0

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error undefined fuction and varible
Deepak - it looks like you have copied this code from (perhap) https://www.mathworks.com/matlabcentral/answers/435101-this-is-my...

26일 전 | 0

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How to use "record" command for some amount of time?
Oai - from Record audio to audiorecorder object, you can specify the length of the audio recording as r = audiorecorder(8000,16...

26일 전 | 0

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Plotting analog input continuously on a given axis
Niraj - if you don't declare daqObj as a global variable, then it will be a local variable. When your function "completes" (afte...

27일 전 | 0

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I get an error when running anomaly time series code in the app designer.
Özge - the output of timeseries is an object and so you need to plot the appropriate data from this object and not the object it...

27일 전 | 0

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Error: Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.
nada - I think that you are trying to set the string property for each of the three edit fields to be the same value. Note that ...

27일 전 | 1

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Issue with plotting multiple data points on same graph
Oscar - look closely at the y-axis for the first image (that which plots both elements). There seems to be a factor of 10^4 so t...

약 1달 전 | 0

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matlab.error graphics.internal.figfile.FigFile/read>@(hObject,eventdata)MTF_Radial('pushbutton4_Callback',hObject,eventdata,guidata(hObject)) Error while evaluating UIControl Callback
Nazil - the problem is with your function signature function [IC]=f_SegmentasiHU(img1.IMA); Note how you are defining the (onl...

약 1달 전 | 0

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App Designer: The Value Assigned Might Not be Used
William - I think that you have your assignment reversed. Instead of Output = trialfunction(app.I_M,filter_size) Output = app....

약 1달 전 | 0

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image changing gui matlab
So once you have created the salida array you need to determine which GUI action will invoke the process to display all the imag...

약 1달 전 | 0

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why the error occur when i use horzcat fuction
Shehab - are you sure that the y is a 1x2 array like [2,3]? Or is it a 2x1 array like [2,3]'? If the latter, then you are trying...

약 1달 전 | 0

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