Quick Start For Mgenie Users

Libisis is similar to mgenie, but there are some minor differences you should note. Below highlights some of these changes.

set_disk, set_dir, set_ext and set_inst

• set_dir and set_disk have been replaced with set_path. Instead of setting the directory separately, one now sets the path, so

>> set_dir('MAPS/homer_files'), set_disk('c:')

becomes

>> set_path('c:\MAPS\homer_files')

• if set_ext is not used then 'RAW' is assumed
• Although one can assign a RAW file, there are many more options available to read RAW files. See the User Manual.

spec and mspec

• spec is analogous to getspectrum. This reads in an IXTdataset_1d object that you can use, which is similar to an mgenie spectrum
• mspec is analogous to getspectra. This reads in an IXTdataset_2d object that you can use. This is similar to the array of mgenie spectra but contains truely two dimensional information and is different to an array of IXTdataset_1d objects.
• can be given RAW file objects as the first argument also - which will override the automatic behaviour to use the assigned RAW file.

mon

• Now reads data into an IXTrunfile object instead of a single spectrum (i.e. IXTdataset_1d object)

Plotting (dl, mp, da, etc.)

• Can now be given spectra number(s) to plot
• Will plot the spectra numbers given from the assigned RAW file
• See Plot Commands for more information

bin

• Replaced with a series of Rebunch Functions that perform a similar task
• Note that other Rebin Functions also exist

amark, acolor and aline

• Now accept combinations of sizes and styles in any order - so aline('--','.-',5,6,3,1,3,'..',2') is ok
• Have over advanced options - see Pre-Emptive Formatting for more information

Two Dimensional Operations

• Almost all one dimensional commands have two dimensional extensions
• function_x operates in the x direction while function_y operates in the y direction
• i.e. shift also has shift_x and shift_y commands for IXTdataset_2d objects.
• See User Manual for more information

deriv

• Is now deriv1 for first derivative
• Use deriv2 for second derivative

sum_work

• Is obsolete
• Use integrate_y on an IXTdataset_2d object.