1. Convert dataset to char array - MATLAB
2. Converting a cell array into a dataset
I have two cell arrays obtained from a database fetch: data (R x C) - contains data with columns of doubles and strings data_fields (C x 1) - contains column names I want to create a dataset with C variables (each with R values), that are named using the column names in data_fields, so that I can do further processing. Any suggestions on how to proceed? I tried an approach involving xlswrite'ing the data to an Excel-formatted file, and using the dataset constructor to read it back in, but the Excel-formatted file is missing column names. If I then want to fix the variable names in the dataset, I basically have to do a replacedata into a new dataset that I've created with blank data, or am I overlooking a ridiculously easy way to rename variables in a dataset? My data has 86 columns also makes a low-level I/O solution a bit impractical, as fprintf requires format strings for every field, and my SQL query may change as I continue my program. I would prefer an approach that doesn't involve file I/O. Using the dataset constructor and hand-specifying the individual columns in the cell array and matching the appropriate variable names is time-consuming, due to there being so many columns, plus it's not the most elegant solution. Would prefer a solution that works no matter how many columns were returned from the original SQL query.
3. convert an input cell array matrix to a double array - MATLAB
4. Traing dataset,Cross validation dataset,test dataset!
First,i diverse dataset into training dataset and test dataset. Then i use three-fold cross validation way to diverse training dataset into training dataset and validation dataset. During the training,i use early stopping by validation dataset.Then i calculate average MSE and choose the structure of neural network.But i donot know how to determine weights of neural network and get final neural network model which i can use test dataset to evaluate the neural network model. Please help me!
5. Traing dataset,validation dataset,testing dataset. - MATLAB
6. Converting a cell array of strings into a readable format
I have an Excel data base that I am reading into Matlab using the
Textread function. When importing the data, I am using %f to create
a double array for the numerical values and %s for the columns
containing the letters to create a cell array of strings. Each
column is its own matrice.
Currently, I cannot figue out how to read a cell array in Matlab. Is
there a way to read the data in the cell array or convert it to a
double matrix so it can then be read? I have tried using {} and
reading the data into matlab differently, however, nothing has worked
so far.
Please help
7. Convert a table in HTML format into a cell array - MATLAB
8. Converting Matlab matrix to xyz column format
I am relatively new to using Matlab and have something I want to do that should be relatively simple. I have a matrix in Matlab (189x256) of landscape elevations (meters above sea level). I want to convert the matrix into x,y,z columns. In this case x and y are the locations of the element in the matrix (1,1 etc.) and z is the elevation associated with that location. Is there a relatively simple way to do this in Matlab? I can do it easily in Fortran, but wanted to know how one would do this in Matlab. Some other software I want to use for plotting requires an xyz column format. Any tips would be appreciated! Yvonne