Rahul
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Accept 20 answers given by other contributors
Awarded to Rahul on 29 Apr 2024
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Pregunta
How to implement implicit methods in partial differential equations in matlab pdepe?
Hello, Refer to the above cited subject, I'm using pdepe for solving a complex partial dieeferntial equation. I'm not sure if m...
alrededor de 1 mes hace | 0 respuestas | 0
0
respuestasPregunta
How to solve it for a scalar output?
Hi, I'm trying to find the electron current using the relation J=sigma[E+uxB] for which my code gives an error Unable to pe...
5 meses hace | 0 respuestas | 0
0
respuestasPregunta
How to introduce fluctuation with respect to time in my code?
Hi, I want to introduce in my code a small fluctuation with respect to time for density and temperature. Can anyone tell me ...
6 meses hace | 1 respuesta | 0
1
respuestaPregunta
Is the oscillation in the picture a boundary condition problem?
Hi, I have an equation which is as follows When I solve this equation using the pdepe it shows an oscillation pattern at the...
6 meses hace | 0 respuestas | 0
0
respuestasIssue regarding a data plot
Hi Divyajyoti, I tried to do the correction as follows percentage_difference_gI(i) = abs(Normalized_intensity_gradient(end,i+1...
6 meses hace | 0
Pregunta
Issue regarding a data plot
Hi, I have a data as attached herewith. The blue plot represents the gradient while the orange plot represents the percentage ...
6 meses hace | 2 respuestas | 0
2
respuestasPregunta
How to determine the minimum point of a plot?
Hi, I have a plot as attached herewith in which the value of the point as shown by arrow mark is to be determined and compared ...
7 meses hace | 2 respuestas | 0
2
respuestasPregunta
Writing a code to determine the gradient change in a profile
Hi, I'm trying to write a code which can determine the gradient change in a given profile. However the code is unable to determ...
8 meses hace | 1 respuesta | 0
1
respuestaPregunta
Regarding choosing correct boundary condition
Hi, I have a condition where at the left boundary and the right boundary I need the flux to be non-zero. Thus, the equations ...
8 meses hace | 1 respuesta | 0
1
respuestaPregunta
Issue with contour plot due to different size
Hello, As cited above I want to have a contour plot, but the problem is the size of X and Z are different. as given below: x...
10 meses hace | 1 respuesta | 2
1
respuestaPregunta
How to import multiple .mat files to the workspace?
Hello, I have 72 no. of .mat files at a location (as in the path in code) which is not possible to import manually. Hence I tr...
10 meses hace | 0 respuestas | 0
0
respuestasPregunta
How to import multiple .mat files to workspace?
Hi, As cited above, I'm trying to import multiple .mat files (total 72 no. of .mat files) which are at the location as in the c...
10 meses hace | 2 respuestas | 0
2
respuestasPregunta
Issue with integration using trapz
Hello, I'm trying to implement integration using trapz. But the resultant quantity after integration is negligibly small and do...
10 meses hace | 0 respuestas | 0
0
respuestasPregunta
Error while extracting MIN and MAX values from a given data
Hi, While trying to extract the min and max values from a given data, the code is unable to extract correctly for data.variable...
10 meses hace | 1 respuesta | 0
1
respuestaPregunta
Error in determining MIN and MAX values from a given vector
Hi, From the attached data my intention is to determine the min and max values for pressure. Thus in data.variable.pressure th...
10 meses hace | 0 respuestas | 0
0
respuestasPregunta
Error during contour plot
Hi, While trying to generate a contour plot, I'm getting an error which is thown as "The size of X must match the size of Z o...
11 meses hace | 1 respuesta | 0
1
respuestaPregunta
Why does it give error in spectrogram plotting?
Hello, I'm getting an error while generating spectrogram. It shows "Dot indexing is not supported for variables of this type....
11 meses hace | 1 respuesta | 0
1
respuestaPregunta
How to fix the error in pdepe?
Hi, In the attached code, it throws an error which says Error using ^ Incorrect dimensions for raising a matrix to a power....
alrededor de 1 año hace | 1 respuesta | 0
1
respuestaPregunta
How to fix the error in integration?
Hi, While performing an integration using trapz it throws an error "Array indices must be positive integers or logical values."...
alrededor de 1 año hace | 1 respuesta | 0
1
respuestaPregunta
Why is the error in the attached code?
Hi, I'm getting an error in the attached code which I'm unable to decode. Hence need your advice in the same. Attached herew...
alrededor de 1 año hace | 1 respuesta | 0
1
respuestaPregunta
How to introduce 2nd order derivative term in pdepe?
Hi, Refer to the subject cited above, I'm not sure if it is possible or not to introduce second order derivative term in pdepe?...
alrededor de 1 año hace | 1 respuesta | 0
1
respuestaIssue with solving pdepe
Hi, plz find attached the set of equations Also i found one mistake in the code that I corrected in the code below. However, ...
alrededor de 1 año hace | 0
Pregunta
Issue with solving pdepe
Hello, Wishing you all a Merry Christmas I'm trying to solve a pdepe consisting of 6 equations which consists pressure, densit...
alrededor de 1 año hace | 1 respuesta | 0
1
respuestaPregunta
Why am I receiving the error?
Hello, I'm receiving an error in my code when run. It shows Error using pdepe Unexpected output of PDEFUN. For this problem P...
alrededor de 1 año hace | 1 respuesta | 0
1
respuestaPregunta
How to retrieve data from a Excel sheet saved at a particular location in pc?
Hello, I want to retrieve data from an excel sheet stored at a particular location in the pc, the path of that particular file ...
alrededor de 1 año hace | 1 respuesta | 0
1
respuestaPregunta
How to code a ramp function?
Hi, I tried to code a ramp function as attached herewith. But getting an error "Operands to the logical AND (&&) and OR (||)...
más de 1 año hace | 1 respuesta | 0
1
respuestaHow to plot frequency spectrum in log-log scale?
Hi Dyuman Joshi, Regarding the the above code for generating frequency spectrum, I'd like to know if it is possible to generat...
más de 1 año hace | 0
Pregunta
How to plot power law frequency spectrum?
Hello friends, I want to plot power law frequency spectrum for the turbulence intensity data as attached. So far I understand...
más de 1 año hace | 1 respuesta | 0
1
respuestaPregunta
Why do I have an error in pdepe solving?
Hi all, I'm having an error while solving a pdepe. It gives me the error "Index exceeds the number of array elements. Index...
más de 1 año hace | 1 respuesta | 1
1
respuestaPregunta
How to plot frequency spectrum in log-log scale?
Hello, I'm trying to plot a frequency spectrum for a given set of data with log scales in both axes which should scale as 10^0,...
más de 1 año hace | 2 respuestas | 0
2
respuestas
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