Software Listing of Author : "M. A. Hopcroft"

  • allan
  • License: Shareware
  • Price:

allan.m calculates the standard Allan deviation (ADEV) of a time domain signal. It is intended for stability analysis of frequency data (although the analysis can be applied to other types of data). Fractional frequency or phase data sets with sample rate or time stamp information are handled. Note: for overlapping and modified Allan deviation analysis, please see the files allan_modified.m (ID: #26637) and allan_overlap.m (ID: #26441).

  • Platform: Matlab, Scripts

allan_modified.m calculates the modified Allan deviation (MDEV) of a time domain signal. It is intended for stability analysis of frequency data. Fractional frequency or phase data sets with sample rate or time stamp information are handled.

  • Platform: Matlab, Scripts

allan_overlap.m calculates the overlapping Allan deviation (ADEV) of a time domain signal. It is intended for stability analysis of frequency data, although the analysis can be applied to other types of data. Fractional frequency or phase data sets with sample rate or time stamp information are handled

  • Platform: Matlab, Scripts
  • fixfig
  • License: Shareware
  • Price:

The default settings for Matlab figures (plots) use small fonts and thin lines. This is fine for quickly evaluating data, but these figures are unreadable when used in an on-screen presentation such as a Powerpoint slide set. FIXFIG takes an existing Matlab figure and increases the font sizes, thickens the lines, increases marker sizes, sets the background to white, etc., so that the figure can be used in an on-screen presentation.

  • Platform: Matlab, Scripts

kpib.m contains code for GPIB and serial port communication for a number of scientific instruments, organized so that a single common command syntax can operate them all. For example, the command: r = kpib(INSTRUMENT,GPIB,'read'); will return the voltage and current reading from a number of different power supplies. The goal is to be able to write matlab code that can accommodate changing instruments and experimental setups with minimum hassle. If INSTRUMENT and GPIB are defined as constants at the beginning of your code, then they can be changed to accommodate new equipment, and the rest of the code is unchanged. In addition, kpib can test whether an instrument exists at an address and read and write arbitrary strings to instruments for testing. Supported instruments (v4.88): Temperature Controllers 'BlueOven' 2800 Controller for...

  • Platform: Matlab, Scripts

Many large organizations use a "network license" for MATLAB, where users must be connected to the FLEXlm license server to run MATLAB. The total number of MATLAB users and users of specific toolboxes is limited by the license. In some cases, a user can obtain a license for MATLAB, but a specific toolbox may not be available because the total number of users has been reached. LICENSEUSE uses the license manager commands to display the number of users that are currently using a license, and their user names. This may help you find users in your organization who have failed to exit MATLAB, for example, and are inadvertently tying up a license.

  • Platform: Matlab, Scripts

National Instruments LabView software has a native file format called LabView Measurement File (LVM, extension .lvm). This m-file, lvm_import.m, reads LVM files and imports the data into the MATLAB workspace. LVM is an ascii text file format, and the data can be imported into MATLAB using the built-in import.m function. However, import.m has some limitations: it cannot handle multi-part LVM files, and it does not return the contents of the file and section headers. lvm_import.m handles all types of LVM files, and returns specific information such as date, time, data column names, etc.

  • Platform: Matlab, Scripts

These scripts take the ascii data files from a contact surface profilometer and extract the scan data. The supported profilometers are: - Dektak IIA - Dektak 3ST - Dektak 8 - AlphaStep 200 - AlphaStep 500 - Tencor P-10 For more information, see: http://micromachine.stanford.edu/~hopcroft...ofilometer.html

  • Platform: Matlab, Scripts

A "ringdown" experiment records the amplitude of a resonator as it decays under the influence of the damping in the system, without any external input. Ringdown.m analyzes a data set from a resonator ringdown measurement and determines the resonator frequency and Q using different methods. An FFT is used to estimate the resonance frequency, and an exponential fit to the signal envelope is used to determine the Q. Finally, a minimum-search fit to the data set is performed to provide a second estimate of both values.

  • Platform: Matlab, Scripts

SERIALDATASTREAM is a design pattern for a function to receive and process a continuous stream of data from a device connected to a USB or serial port. This function does not execute as written; it includes explanations and examples for all of the steps required to capture data which is transmitted continuously over a USB or serial interface. It uses some advanced features of the MATLAB serial port functions and has been successfully used for capturing data at rates up to 1.5 MB/sec. Examples for Windows, Mac OS X, and Linux are included. The MATLAB Instrument Control Toolbox is not required. This code does not execute as it is written; it is a design pattern with explanations and examples in the comments. You can read it and modify it for your needs.

  • Platform: Matlab, Scripts
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