Star Strider
Hic sunt dracones! PROFESSIONAL: Physician (M.D.): Diplomate of the American Board of Internal Medicine; M.Sc. Biomedical Engineering: Instrumentation, Signal Processing, Control, System Identification, Parameter Estimation NON-PROFESSIONAL: Amateur Extra Class Amateur Radio Operator; Private Pilot, Airplane Single Engine Land, Instrument Rating Airplane; Gamer NOTE: I do not respond to emails or personal messages, unless they are about my File Exchange contributions. Time Zone: UTC-7 (Standard); UTC-6 (Daylight Savings/Summer)
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已回答
Help with Plotting the Envelope of a Scatter Plot in MATLAB
The boundary function or related functions can probably help with this. Since the data appear to have stepwise y-values, anot...
Help with Plotting the Envelope of a Scatter Plot in MATLAB
The boundary function or related functions can probably help with this. Since the data appear to have stepwise y-values, anot...
2 days 前 | 1
已回答
Is it possible to add a secondary y axis while using the stackedplot function?
Apparently not. Any provision for creating a second y-axis is apparently not available, even when attempting to 'force' it (t...
Is it possible to add a secondary y axis while using the stackedplot function?
Apparently not. Any provision for creating a second y-axis is apparently not available, even when attempting to 'force' it (t...
9 days 前 | 0
| 已接受
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curve fitting toolbox is showing installed but when i try to use in my apps pane it display 'no apps installed'. i dont know what to do please help.
First, run these from a script or your Command Window: restoredefaultpath rehash toolboxcache If that does not solve your ...
curve fitting toolbox is showing installed but when i try to use in my apps pane it display 'no apps installed'. i dont know what to do please help.
First, run these from a script or your Command Window: restoredefaultpath rehash toolboxcache If that does not solve your ...
9 days 前 | 0
已回答
Difference between integral and cumtrapz.
They produce the same result if you let them. Try something like this -- x = [-10:0.01:10]'; fx = @(x) x.^2; for k = 1:nu...
Difference between integral and cumtrapz.
They produce the same result if you let them. Try something like this -- x = [-10:0.01:10]'; fx = @(x) x.^2; for k = 1:nu...
11 days 前 | 0
| 已接受
已回答
Error "Array indices must be positive integers or logical values" occurs at the line [row1, col1, s1] = ind2sub(size(chi_coeff), idx1);
My guess is that you have a variable names 'size' and that is throwing the error. Run this to test that hypothesis: which s...
Error "Array indices must be positive integers or logical values" occurs at the line [row1, col1, s1] = ind2sub(size(chi_coeff), idx1);
My guess is that you have a variable names 'size' and that is throwing the error. Run this to test that hypothesis: which s...
11 days 前 | 2
已回答
Title issues when plotting
Create everything as a string array -- InputSheet = "Plate #1"; Grain{1} = 42 degsign = string(char(176)); n = 1; T_oQlast...
Title issues when plotting
Create everything as a string array -- InputSheet = "Plate #1"; Grain{1} = 42 degsign = string(char(176)); n = 1; T_oQlast...
12 days 前 | 0
| 已接受
已回答
What is the cause of strange "spike" artifacts after IFFT?
The signals are approximately the same lengths in time, however 'Zoom1' has a significantly higher sampling frequency than 'Zoom...
What is the cause of strange "spike" artifacts after IFFT?
The signals are approximately the same lengths in time, however 'Zoom1' has a significantly higher sampling frequency than 'Zoom...
14 days 前 | 0
已回答
Please help me to run the surface figure from the attached code
The error is because you are missing a multiplication operator dy(2) = (((rhot/mut)*(a*(muf/rhof)^0.5*(E*F+E^2)+a*(muf/rhof)*w*...
Please help me to run the surface figure from the attached code
The error is because you are missing a multiplication operator dy(2) = (((rhot/mut)*(a*(muf/rhof)^0.5*(E*F+E^2)+a*(muf/rhof)*w*...
15 days 前 | 0
| 已接受
已回答
No results from calculations in the command window
I am not certain that I fully understasnd your problem. MATLAB functions have their own workspaces, so variables local to the...
No results from calculations in the command window
I am not certain that I fully understasnd your problem. MATLAB functions have their own workspaces, so variables local to the...
15 days 前 | 0
| 已接受
已回答
tfest() failed with higher order
One way to estimate the system order with reasonably accuracy from the output signal itself is to calculate the Fourier transfor...
tfest() failed with higher order
One way to estimate the system order with reasonably accuracy from the output signal itself is to calculate the Fourier transfor...
16 days 前 | 1
已回答
Plotting Set of Inequalities
It is difficulf for me to interpret what you want to plot. One way to 'include' an area of inequality in a plot is to use the...
Plotting Set of Inequalities
It is difficulf for me to interpret what you want to plot. One way to 'include' an area of inequality in a plot is to use the...
16 days 前 | 0
已回答
Matlab freezes on startup
That it opens dos.m in the Editor and then freezes could indicate that your startup.m file is telling it to open that file in th...
Matlab freezes on startup
That it opens dos.m in the Editor and then freezes could indicate that your startup.m file is telling it to open that file in th...
16 days 前 | 1
已回答
How do I turn off the LaTeX interpreter per line in my title within MATLAB?
Probably the easiest way to do what you want would be to 'escape' the underscore lines using backslashes (\) -- figure title([...
How do I turn off the LaTeX interpreter per line in my title within MATLAB?
Probably the easiest way to do what you want would be to 'escape' the underscore lines using backslashes (\) -- figure title([...
20 days 前 | 0
已回答
Change width of 2 colorbars in tiledlayout
I am not certain whst result you want. This seems to work -- img_sos = rand(64); img_oar_pixel = rand(64); img_oar_block ...
Change width of 2 colorbars in tiledlayout
I am not certain whst result you want. This seems to work -- img_sos = rand(64); img_oar_pixel = rand(64); img_oar_block ...
24 days 前 | 0
已回答
How to extract ridges from Time-Frequency transform?
It would help to have your signal. One option could be pspectrum with the 'spectrogram' option. Plot it as a surface, then...
How to extract ridges from Time-Frequency transform?
It would help to have your signal. One option could be pspectrum with the 'spectrogram' option. Plot it as a surface, then...
26 days 前 | 0
已回答
Calculate the Standard Deviation based on multiple conditions
It would definitely help to have the data, or at lest a representative sample of it. One option would be to use the function, ...
Calculate the Standard Deviation based on multiple conditions
It would definitely help to have the data, or at lest a representative sample of it. One option would be to use the function, ...
29 days 前 | 0
已回答
compiled matlab script where incorrect variables are passing
The '49' is the ASCII code for '1' -- Q = double('1') Mystery solved! You may need to change parts of your code, or perhap...
compiled matlab script where incorrect variables are passing
The '49' is the ASCII code for '1' -- Q = double('1') Mystery solved! You may need to change parts of your code, or perhap...
29 days 前 | 0
| 已接受
已回答
How to project a line on a surface?
Perhaps something like this using the scatteredInterpolant function -- x = linspace(-3, 3); y = linspace(-4, 4); [X,Y] = ndg...
How to project a line on a surface?
Perhaps something like this using the scatteredInterpolant function -- x = linspace(-3, 3); y = linspace(-4, 4); [X,Y] = ndg...
1 month 前 | 1
已回答
How to write a timetable to excel with rowtimes as dates without times?
That is likely a problem with Excel. MATLAB writes the timetable correctly -- m = (1:3)'; dates = datetime(2025,m,15) tt ...
How to write a timetable to excel with rowtimes as dates without times?
That is likely a problem with Excel. MATLAB writes the timetable correctly -- m = (1:3)'; dates = datetime(2025,m,15) tt ...
1 month 前 | 0
| 已接受
已回答
Time-domain response from FRF shows unexpected growth (damped system)
I can make it work by using conj on the first half of 'displ_2' and concatenating that with the original 'displ' vector. Try ...
Time-domain response from FRF shows unexpected growth (damped system)
I can make it work by using conj on the first half of 'displ_2' and concatenating that with the original 'displ' vector. Try ...
1 month 前 | 1
| 已接受
已回答
Error in step size and i dont know why. I need help..... please.
The warning simply means that ode113 has encountered a singluarity in one of your differential equations. It is not obvious to ...
Error in step size and i dont know why. I need help..... please.
The warning simply means that ode113 has encountered a singluarity in one of your differential equations. It is not obvious to ...
1 month 前 | 0
已回答
Blurry and hazy lines in matlab plots.
One option could be to upgrade to 24.04. (I have not had problems similar to the ones you are reporting using 24.04, although m...
Blurry and hazy lines in matlab plots.
One option could be to upgrade to 24.04. (I have not had problems similar to the ones you are reporting using 24.04, although m...
1 month 前 | 0
已回答
How to fill in the area under the curve
Perhaps something like this -- clc clear all; x=[0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.1...
How to fill in the area under the curve
Perhaps something like this -- clc clear all; x=[0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.1...
1 month 前 | 0
| 已接受
已回答
How i crop the image using image processing?
Your data are not easy to work with, and the scribe line yu added does not help! I needed to get into other plot types and do...
How i crop the image using image processing?
Your data are not easy to work with, and the scribe line yu added does not help! I needed to get into other plot types and do...
1 month 前 | 0
已回答
Cannot install Matlab 2006b on my Windows 11 laptop
See System Requirements - Release 2006b That should tell you all you need to know about the reasons that will likely never wor...
Cannot install Matlab 2006b on my Windows 11 laptop
See System Requirements - Release 2006b That should tell you all you need to know about the reasons that will likely never wor...
1 month 前 | 1
已回答
Using sgolayfilt in derivative analysis of absorption images
The sgolayfilt function is used in signal processing of one-dimensional signals, not image processing of two-dimensional arrays....
Using sgolayfilt in derivative analysis of absorption images
The sgolayfilt function is used in signal processing of one-dimensional signals, not image processing of two-dimensional arrays....
1 month 前 | 0
已回答
I am trying to fill in the area between these two curves.
Perhaps something like this -- clc clear all Duty = [0 2112798.41 4225596.82 6338395.22 8451193.63 ...
I am trying to fill in the area between these two curves.
Perhaps something like this -- clc clear all Duty = [0 2112798.41 4225596.82 6338395.22 8451193.63 ...
1 month 前 | 0
| 已接受
已回答
How show direction of line inside plot and ?
I am not certain what you want. My best guess is that you want smaller arrows in the last two figures. The fifth argument to q...
How show direction of line inside plot and ?
I am not certain what you want. My best guess is that you want smaller arrows in the last two figures. The fifth argument to q...
1 month 前 | 1
已回答
Installing MATLAB 2025a in Ubuntu 22.04
I run the MATLAB Installer. This usually works, however it will first stop when it cannot create the installation directory. Y...
Installing MATLAB 2025a in Ubuntu 22.04
I run the MATLAB Installer. This usually works, however it will first stop when it cannot create the installation directory. Y...
1 month 前 | 0
已回答
Trying to do an fsolve via an anonymous function
I exrtracted your code sections and attempted to run it. You need to check the trapz integration. The call to it is correct,...
Trying to do an fsolve via an anonymous function
I exrtracted your code sections and attempted to run it. You need to check the trapz integration. The call to it is correct,...
1 month 前 | 1
