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Accept 5 answers given by other contributors
Awarded to Ismita on 13 Mar 2024
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Solution of nonlinear equation is different for different initial values
I have two codes. The first one is for two equations and the 2nd one is for 5 equations. the first one is giving the perfect res...
11 Monate vor | 1 Antwort | 0
1
AntwortFrage
Matlab showing 0 instead of small value
In the following code delta_rho_m, delta_p_m (=(mass_density_CGS - mean(mass_density_CGS))) are very small, and delta_p_m is sho...
11 Monate vor | 1 Antwort | 0
1
AntwortFrage
Solving nonlinear equations using matrix
I have p11 X1 + p12 X2 + p13 X3 + (-sin(psi) cos(X5) cos(X6) + cos(psi) sin(X5)) X4 &= C_1 (i) ; p21 X1 + p22 X2 + p23 X3 +...
11 Monate vor | 1 Antwort | 0
1
AntwortFrage
Solving large number of equations
I am having issues to solve like following equations. I request for help/ suggestion to solve this type of equations. Thanks! s...
11 Monate vor | 2 Antworten | 0
2
AntwortenFrage
cosd() giving similar value for different angles
I have the following code. Though latitude(i) and longitude(i) have different values in degree, Ut and Un are giving the same va...
11 Monate vor | 1 Antwort | 0
1
AntwortFrage
Solving multiple equations with constants like c_i
I request for help/ any suggestions. I need to solve for X1, X2, X3, X4, X5, X6, X7, X8 eq1(i) = p_11*X1 + p_12*X2 + p_13*X3 +...
11 Monate vor | 1 Antwort | 0
1
AntwortFrage
Why eigen vector looks different than the calculated one
I have a matrix A = [7, 3; 3, -1]; Calculated eigen value = (-2, 8) and eigen vcetor = (1, -3). The code gives different eigen v...
11 Monate vor | 1 Antwort | 0
1
AntwortFrage
Unit vector from the vector
mean_speed_R, mean_speed_T and mean_speed_N are the components of mean_U0_vector. How should I express the unit vectors along R,...
11 Monate vor | 1 Antwort | 0
1
Antworthow to solve if interpolated data also contains NaN values
Thank you. In the attached file of the data, last column is for long and second last column is for lat.
11 Monate vor | 0
Frage
how to solve if interpolated data also contains NaN values
I was trying to interpolate 'lat' and 'long' columns but even after interpolation first 4 data are still showing as NaN. For oth...
11 Monate vor | 1 Antwort | 0
1
AntwortFrage
Writing unit vector with the terms in an equation
unit_y_vector = (mean_speed_T * mean_speed_N)/(magnitude_U0_mean_RTN)^2 - (mean_speed_R * mean_speed_T)/(magnitude_U0_mean_RTN)^...
12 Monate vor | 1 Antwort | 0
1
AntwortFrage
Solving equations using Newton-Raphson method for 7 equations with 7 variables
I need to solve "PX_i = C_i" (i = 1,2,...7) using Newton-Raphson method. I have written the code in two files. One is unction an...
12 Monate vor | 2 Antworten | 0
2
AntwortenFrage
How to make a sequence of time and the corresponding data from a data set where time is not provided sequentially
I have some time series data for velocity, density for 30 mins time gap. But when I plotted, I see the time overlaps. How can I ...
12 Monate vor | 1 Antwort | 0
1
AntwortFrage
To find angular frequency and wave vector for time series data
if I have 10 set of time series data velocity componnts Vx, Vy and Vz with 5 minutes interval of time, how to find the angular f...
fast ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
Dealing data with text and numerical in .txt file
I have a txt file containing some data as follows: how to visualize using Matlab? I request your suggestions. "k: 0.1, omega_re...
fast ein Jahr vor | 3 Antworten | 0
3
AntwortenFrage
Drawing a line through the peak of the plot
I have a plot as follows. How can I add vertical lines through the peak points (total 3 lines here) in the plot ? Code: I h...
etwa 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Location of a value in a matrix
Say, I have a matrix x = 0:0.5:20. How can I find the exact location (according to the array) of the value of x==9.5? thanks
etwa 2 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
polar plot of n^2 = 1+g equation
polar plot of n^2 = 1+g (g=a/b~10^4) and/ or p^2 = (1-g)/( (1+g)*cos^2(theta)) equations and how can I get a circle from this eq...
etwa 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
selection of one parameter for correlation coefficient
Suppose, I have 100 rows of P and Q, and 20 rows of data make a group. Average of each group gives new set of data points (tota...
fast 3 Jahre vor | 1 Antwort | 0
1
AntwortFrage
time date to datenum and datenum to datetime
I have time in 'yyyy-MM-dd''T''HH:mm:ss.SSS''Z' formate (e.g., [2018-08-01T20:05:00.000Z; 2018-08-01T20:10:00.000Z; 2018-08-01T...
fast 3 Jahre vor | 3 Antworten | 0
3
AntwortenFrage
Group making from large data size
How to make group of 10 row and mean of those 10 rows, then to calculate fluctuation of each gruop member from their correspond...
fast 3 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
I tried Hampel filtering to discard the bad data, but it was not fruitful. How to avoid/filter
Dear all, I have attached the data plot. I tried Hampel filtering to discard the bad data, but it was not fruitful. How to avoi...
fast 3 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
while writing txt file variables/data are shown in one column instead of being different column
Dear all, While writing a txt file of dataset, though in work space I see output like L(as I need) but in the txt file, it show...
fast 3 Jahre vor | 1 Antwort | 0
1
AntwortFrage
I have data in seconds of each year, how to make continuous data for few years to plot as variable (Vx, Vy) Vs year
I have data in seconds of each year, how to make continuous data for few years to plot variable (Vx, Vy) Vs year. Here some data...
fast 3 Jahre vor | 1 Antwort | 0
1
AntwortFrage
How to make time string from seconds of each year (total 11 years) to year (for 11 years)
Dear all, I have a time series data set from 2008 to 2019. Where 1st column is for year and 2nd column (time interval is 300 se...
fast 3 Jahre vor | 1 Antwort | 0
1
AntwortFrage
how to calculate first n terms of the sawtooth Fourier series and plot the results in figure?
mehr als 3 Jahre vor | 1 Antwort | 0
1
Antwort
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