Graphics Reference
In-Depth Information
1.1.2 Data Access and Analysis
MATLAB supports the entire process of data analysis, from the acquisition of data from external devices and databases,
pre-processing, visualization and numerical analysis, up to the production of results in presentation quality.
MATLAB provides interactive tools and command line operations for data analysis, which include: sections of
data, scaling and averaging, interpolation, thresholding and smoothing, correlation, analysis of Fourier and filtering,
search for one-dimensional peaks and zeros, basic statistics and curve fitting, matrix analysis, etc.
Figure
1-5
shows a diagram that shows a curve adjusted to atmospheric pressure differences averaged between
Easter Island and Darwin in Australia.
Figure 1-5.
In terms of access to data, MATLAB is an efficient platform for access to data files, other applications, databases
and external devices. You can read data stored in most known formats, such as Microsoft Excel, ASCII text files or
binary files of images, sound and video, and scientific archives such as HDF and HDF5 files. The binary files for low
level I/O functions allow you to work with data files in any format. Additional features allow you to view web pages
and XML data.
It is possible to call other applications and languages, such as C, C++, COM, DLLs, Java, Fortran, and Microsoft Excel
objects and access FTP sites and web services. Using the Database Toolbox, you can access ODBC/JDBC databases.
