MLogitNE                                 CiudadSim Function

NAME

MI2Scilab - MapInfo to scilab interface

CALLING SEQUENCE


[nodes,links,color,Bidir]=MI2Scilab(name)

PARAMETERS

DESCRIPTION

The purpose of the MapInfo interface is to facilitate the input of the geographical data into the CiudadSim Toolbox and to provide a nicer way of displaying the results obtained after the assignment. There are two commands : MI2Scilab (to translate from MI to Scilalb) and Scilab2MI (to translate from Scilab to MI).

The MapInfo files must be done following these directions:


- In MapInfo, open the file MI_empty.tab located in the directory 
examples of the MCiudadSim toolbox.

- Save it with another name to be able to modify it. 

- Close the MapInfo table MI_empty and open the one you created. 

- Make the layer editable.

- Press the F key to enter in the fussion mode

- Draw the arcs as polylines. 

- Export the table to obtain two files one .mif and other .mid .


Important Remarks :
1) The extreme of the arcs will be considered as nodes so if you want that two arcs share the same node is important to draw it like that. That's why the Fussion mode is important, when the pointer is over an already defined node it will change into a cross.
2) The style of the polyline is used to differentiate one-way and two-ways links. The two-ways links can have any style but one-way links must have style 2. Each two-way link in MapInfo corresponds to two one-way links in Scilab. This correspondance is found in the sparse matrix Bidir.

3) The links can be given different colors, these colors will be in the output as the vector color, it can be useful to differentiate subsets of links.



EXAMPLES


// MapInfo translation from the files SGL_Versailles_v.mid and SGL_Versailles_v.mif
// regular town example with four modes and two classes
[nodes,links,color,Bidir]=MI2Scilab(MCS_DIR+"/examples/SGL_Versailles_v");
// Show the translated arcs in Scilab
MShowLinks(nodes,links)

SEE ALSO


Scilab2MI