External Programs

SPHtoGrid.jl provides helper function for two external sph mapping Codes: Smac and P-Smac2.

Smac

Smac is a SPH mapping Code by Klaus Dolag and others. The implementation is described in Dolag et al. 2005.

Smac isn't public unfortunately. So these functions are mainly for my personal use. If you do have access to Smac, here's a reference to what you can do.

SPHtoGrid.jl provides some functions to read the FITS and binary output of Smac. To get the binary format you need to set FILE_FORMAT = 1 in the parameter file.

Writing the parameter file

You can write a Smac1 parameter file with

write_smac1_par( path="./"; kwargs...)

Reading image information

If you set FILE_HEADER = 1 in the Smac parameter file you can read the information of the image header into a Smac1ImageInfo with:

read_smac1_binary_image(filename::String)

For a Smac1 FITS file you can read the header into a mappingParameters struct with

read_smac1_fits_info(filename::String)

Reading the image

The image itself can be read with

read_smac1_fits_image(filename::String)

P-Smac2

P-Smac2 by Julius Donnert is an advanced mapping code for a multitude of different quantities.

Writing the parameter file

To run a mapping and plotting loop from a Julia script you need to update the parameter files on the fly. The function write_smac2_par provides this functionality.

write_smac2_par(x, y, z,
                euler_angle_0, euler_angle_1, euler_angle_2,
                xy_size, z_depth, xy_pix::Integer,
                input_file, output_file, path,
                effect_module::Integer=0, effect_flag::Integer=0,
                ν_obs::Real=1.44e9, cosmology::Integer=0,
                CR_pmin::Real=10.0, CR_pmax::Real=1.e7)

Reading image information

For a Smac1 FITS file you can read the header into a mappingParameters struct with

read_smac2_info(filename::String)

Reading the image

The image itself can be read with

read_smac2_image(filename::String)