Frage

how i do weekly average?
Hi all, I have a matrix of 978*744 which is = no. observation*hours in a month. and the attached mat file is the DateTime v...

etwa 7 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

how do I plot reference arrow in quiver plot?
Hi all, I have a quiver plot that I want to plot a reference arrow on it? as the attachment shows. could anyone help? th...

etwa 7 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

How to fill the grid matrix?
Hi all, I extracted the data from files sequentially. The aim is ordering the values by the grid points; in the grid file, I...

etwa 7 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

how to correct the error in the datetime?
Hi all, I wrote the following script to extract some data from the list of files. The date time matrix is still shown some er...

etwa 7 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

how I do header extraction from file?
Hi all, I extracted the numeric data from .tuv file but I still need to extract the date and time which is in the form of ...

etwa 7 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

how I do data gridding ?
hi all, I need your kind help in the data implementation, means that there are two vectors ( latitude and longitude) those I...

etwa 7 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

how to average num of column for each row?
Hi all, Thank for the help in advance. I have a matrix in dim. of 972 (rows) * 715 (columns) I want to make an average o...

mehr als 7 Jahre vor | 2 Antworten | 0

2

Antworten

Frage

how to naming files sequently?
Hi all, could anyone help me with this file naming (control loop) *TOTL_REDC_2017_07_* 02_0500 the bold part is fixed...

mehr als 7 Jahre vor | 2 Antworten | 0

2

Antworten

Frage

how to solve the fopen error?
Hi all, I've done the below code to read .txt files and extracting columns from each one. the error appears just from th...

mehr als 7 Jahre vor | 1 Antwort | 1

1

Antwort

Frage

quiver plot on coastline map
Hi all I have a matrix of m*n dimension for latitude, longitude, velocity components (u,v) I would like to plot this (quiver...

mehr als 7 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

How to open several txt files?
Hello everyone, thank you in advance for the help. I would like to open several text files (loop) named by the following: ...

mehr als 7 Jahre vor | 1 Antwort | 1

1

Antwort

Frage

how plot the best fit curve
Hi all, the attached fig shows the daily mean time series data. how can plot the best fit curve? thank you.

fast 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

correlation function lag selection
Hi all, I am working on NN toolbox (NARXNET). As the delays criteria selection, the ID can found from cross-correlation funct...

etwa 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

plot using for loop?
hi all, I have the following code to plot 5 different subplot hist. for 5 different matrices but it has the same dim. for each ...

etwa 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

What is the difference between trainlm and trainrp?
Hi all does the training function affect on the run data? I compared the result between two different functions (trainrp, trai...

etwa 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

how to convert wind direction to degrees?
Hi all, I am working with wind speed and direction but the last is in form of compass, thus it required to convert it to degre...

mehr als 8 Jahre vor | 3 Antworten | 0

3

Antworten

Frage

changing the labels?
Hi all, could you please help me to change the x,y label in each plot in the attached fig. Note that the fig is already done a...

mehr als 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

How to find elements?
hi all, I have a matrix contains +ve, -ve and 0 values. how to find the elements in the range of the -ve values? thank you fo...

mehr als 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

how coding drag coefficient?
Hi all, I need kindly help to write a code to calculate drag coefficient as the attached figure. thank you in advance

mehr als 8 Jahre vor | 2 Antworten | 0

2

Antworten

Frage

The performance of hidden neurons
Hi all, after several runs of the neural network to select the optimum number of hidden neurons, I found that the performanc...

mehr als 8 Jahre vor | 2 Antworten | 0

2

Antworten

Frage

how to do interpolation?
Hi all, I worked with the time series of the sea level data (non-tidal residual. thus, there is no periodicity in the time s...

mehr als 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

Percentage of variation?
Hi all, could anyone please help me to write this equation to calculate the percentage of variation. every time I got different...

mehr als 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

how to write the percentage into pie chart?
hi all, the attached pie chart shows the percentage of variance. I want to write the percentage inside sector and the txt defi...

mehr als 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

How to change the mean value in the box plot?
Hi all, I want to replace the mean value in the boxplot to the RMSE. as figure illustrates. Thank you in advance

mehr als 8 Jahre vor | 2 Antworten | 0

2

Antworten

Frage

how to hiding the legend?
Hi all I used Neural Network ToolBox and the plotted regression is one of the toolbox's functions. how can I hiding the legend...

mehr als 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

how to calculating monthly average?
hi all I just want to be sure about this small monthly averaging code I=1; for i=1: length(x)/30; y(i)=mean(x(I:I+...

mehr als 8 Jahre vor | 2 Antworten | 0

2

Antworten

Frage

erorr in for loop
could you please help me to correct these small calculations w=0:0.02:5; for i=1:length(w) a(i)=w.^4-12.*(w.^2); b(i)=...

mehr als 8 Jahre vor | 2 Antworten | 0

2

Antworten

Frage

why the network performance decreased??
hi all, I applied NARXNET to predicting the time series. the problem is when I used the for loop to find the most optimum HN ...

mehr als 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

cross corrolation vector error
hi all, I have 2 matrices x [5 365], y [1 365]. when I use the command crosscorr to determine the lag this error is appear ...

mehr als 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

Different size plotting matrices
Hi all, I want to ask how to plot 3D different size vectors?. Actually, there is 2 matrices (x,y) have the same dim. and the th...

mehr als 8 Jahre vor | 1 Antwort | 0

1

Antwort