8.19 File I/O (MGL)

MGL command: read dat 'fname'

Reads data from tab-separated text file with auto determining sizes of the data.

MGL command: read dat 'fname' mx [my=1 mz=1]

Reads data from text file with specified data sizes. This command does nothing if one of parameters mx, my or mz is zero or negative.

MGL command: readmat dat 'fname' [dim=2]

Read data from text file with size specified at beginning of the file by first dim numbers. At this, variable dim set data dimensions.

MGL command: readall dat 'templ' v1 v2 [dv=1 slice=off]

Join data arrays from several text files. The file names are determined by function call sprintf(fname,templ,val);, where val changes from v1 to v2 with step dv. The data load one-by-one in the same slice if slice=off or as slice-by-slice if slice=on.

MGL command: readall dat 'templ' [slice=off]

Join data arrays from several text files which filenames satisfied the template templ (for example, templ="t_*.dat"). The data load one-by-one in the same slice if slice=off or as slice-by-slice if slice=on.

MGL command: save dat 'fname'

Saves the whole data array to tab-separated text file.

MGL command: readhdf dat 'fname' 'dname'

Reads data array named dname from HDF5 or HDF4 file fname.

MGL command: savehdf dat 'fname' 'dname'

Saves data array named dname from HDF5 or HDF4 file fname.

MGL command: import dat 'fname' 'sch' [v1=0 v2=1]

Reads data from bitmap file. The RGB values of bitmap pixels are transformed to float values in range [v1, v2] using color scheme sch (see section Color scheme).

MGL command: export dat 'fname' 'sch' [v1=0 v2=0]

Saves data matrix to bitmap file. The data values are transformed from range [v1, v2] to RGB pixels of bitmap using color scheme sch (see section Color scheme). If v1>=v2 then the values of v1, v2 are automatically determined as minimal and maximal value of the data array.