# Creating a new project¶

Note

The following section only discuss separate-directory projects.

To start a new project, create a directory separated from the src/ directory of PLANES (your dir may be anywhere on the file system) and create a .m file inside

$mkdir /home/you/MyPLANESProject/$ cd /home/you/MyPLANESProject
$touch MyProject.m  Some other directories will be useful too (such as output for info-files, graphs, FreeFEM programs & data files) $ mkdir -p out Profiles m m/Materials FF


The files are organised as follows:

• The root m-file is used to start the experiment (its contents are details hereafter)
• Each subproject has a m-file in m/ and if needed a EDP (FreeFEM) file in FF/. They are named : <project name>_<num of subproject>_data.m and <project name>_<num of subproject>.m
• The materials related m-files used for the project are stored in m/Materials/
• Output (text) files from runs will be sent to out/ and graphs to Profiles/
• A m/<project name>_<num of subproject>_postprocess.m can be used to define a post-processing routine and it will be trigged after the resolution.

Tip

You can consider a project as a global experiment. The next step is therefore to specify the different configurations for the experiment. If one wants for example to test reflection on a porous material set behind a membrane, it may be interesting to try different parameters for the membrane : all the configurations are about the same experiment, thus in the same project dir. Configurations are identified by appending an underscore (_) and a number at the end of m-file and .edp.

## Project file¶

The main file must define some structures, see the example below for more information :

clear all
close all
current_dir=pwd;
PLANES_dir='../../src/Main/';

frequency.nb=5; % number of frequencies (negative : log spaced)
frequency.min=100;
frequency.max=20000;

% Information about the output graphs
data_model.profiles.mesh=1; % plot the mesh
data_model.profiles.x=0; % profiles along x/y axis
data_model.profiles.y=0;
data_model.profiles.map=0; % plot a 2D map of the solution
data_model.profiles.custom=0; % custom plots activation
data_model.profiles.custom_plots = {}; % cellarray of strings, scripts stored in m/

% export data ?
data_model.export.profiles=0;
data_model.export.nrj=1;
data_model.export.reset=0; % delete old files before export

% log level (0 -> 2)
data_model.verbosity = 1;

% DGM related (number of waves of the recontruction basis & initial tilt)
data_model.theta_DGM.nb=4;
data_model.tilt=0;

% Fully separated projects
name.project_directory=current_dir;

% Call to PLANES
cd(PLANES_dir)
PLANES('Project Name', num_of_subproject, data_model, frequency, name)
cd(current_dir);