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Illustration of Advanced file input and output:
For illustration, to refer to the third number in the first element of the cell array:
>> subjdata{1}(3)
ans =
3.3000
The script which reads in this data and echo-prints it is shown here:
Executing this script generates the following results which are as shown below:
>> textscanex
5.3 a
2.2 b
3.3 a
4.4 a
1.1 b
File close successful
To conclude, we know four techniques of reading from a file. The function load will only work when the values in the file are all of similar type and there is similar number on every line in the file, so that they can be read into the matrix. If this is not the situation, lower level functions should be used. To use these, the file should be opened first and then closed whenever the reading has been done. The fscanf function will read into the matrix, converting the characters to their ASCII equivalents. The textscan function will rather read into a cell array which stores each column from the file into individual column vectors of the cell array. At last, the fgetl function can be used in a loop to read each line from the file as an individual string; the string manipulating functions should then be used to break the string into pieces and convert to numbers.
strvcat function - concatenation: The function strvcat will concatenate it vertically, that means that it will generate a column vector of the strings. >> strvcat(fir
Three-Dimensional Plots: The MATLAB has many functions which will display three-dimensional plots. Most of these functions have similar name as corresponding two-dimensional p
Changing Dimensions: In addition to transpose operator, the MATLAB has some built-in functions which change the dimensions or configuration of matrices, involving fliplr, resh
Illustration of Writing to files: Here is the other illustration in which a matrix is written to a file. At First, an arbitrary 2 × 4 matrix is generated, and then it is writt
Plot types: Besides plot and bar, there are another plot types like stem plots, histograms, stem plots, area plots and pie charts, and also other functions which customize the
Matrix of Plots: The other function which is very useful with any type of plot is subplot that creates a matrix of plots in the present Figure Window. The three arguments are
Program of built-in factorial function: Calling this function yields similar result as the built-in factorial function: >> fact(5) ans = 120 >> factorial(
Animation: In this part we will observe a couple of ways to animate a plot. These are visuals, therefore the outcomes can't really be shown here; it is essential to type these
Customizing Plots : There are numerous ways to customize figures in the Figure Window. On clicking the Plot Tools icon will bring up the Property Editor & Plot Browser, with ma
Three-dimensional pie and bar: For the bar3 function, x & y vectors are passed and the function displays three-dimensional bars as shown in figure: Figure: Three-dimen
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