====== Spatial Data management ======

The data management is made through the //Data// menu, it contains the following elements:

  * //Link data...// (**Ctrl+O**): reference a support layer which will be displayed in your project
  * //Unlink data...// (**Ctrl+W**): unlink a layer
  * //Import data//: import data into one of your construction theme

===== Link data =====

The //Link Data...// option from the menu //Data// allows loading some support themes for the vectorization of the construction layers. Those support themes can be vector data (*.shp) or raster data (*.tif, *.JPG and Esri's binary GRID).

In the opposite of the construction layers, the support themes are not stocked in the project but only referenced.

==== Rotation ====

Some of your files may have rotation information, which is not yet supported by ToolMap. In that case you will see the following message:

{{window-rotationwarning.png?nolink}}

  - rotation information
  - display option

This message will pop up every time you make an action regarding the layer (including trivial actions like zoom or pan), so be sure to [[faq:rotation|convert your images into non-rotated rasters]]. If the rotation is insignificant, you may prefer to simply ignore the message by checking the option **Hide warnings for this layer**. This option prevent the appearance of the message for the current session, but it will pop again the next time you launch your project.
===== Import data =====

The //Import data...// option from the menu //Data// allows you to import some existing information into your construction layers. You can only import lines or points geometries. The process is made in 3 different steps.

==== Step1 ====

{{man:window-importdata1.png?nolink}}

  - the //Import data...// option allows two types of data, choose the one you want to import
  - Go to the next step of the import or cancel the operation
==== Step2 ====

If you choose to add a shapefile the following step comes ahead\\ 

{{man:window-importdata2.png?nolink}}

  - Directory path of the shapefile
  - data information of the shapefile
  - allow to go back to [[man:data_manage&#step1|step 1]] or to continue to [[man:data_manage#step3|step 3]]

If you choose to add a CSV file the following step comes ahead\\ 

{{man:window-importdata4.png?nolink}}

  - Directory path of the CSV file
  - Information on the CSV file
  - allow to go back or to continue to step 2.2
=== Step2.2 ===

The CSV files are composed of columns of data separated with commas, you will have to choose wich column you want to assign to the X and Y coordinates\\ 

{{man:window-importdata5.png?nolink}}

  - List of the columns which can be assigned as X or Y coordinates
  - allows to go back or to continue to [[man:data_manage#step3|step 3]]
==== Step3 ====

{{man:window-importdata3.png?nolink}}

  - List of layers within the data will be imported (with the shapefile import the choice is restricted to the geometrical type of the data)
  - import the data or cancel the operation
===== Table of contents options =====

{{window-tocoption.png?nolink}}

  - {{button-marked.PNG?nolink}}: Activate the display of the layer\\ {{button-unmarked.PNG?nolink}}: Deactivate the display of the layer
  - Edition mode activated: the layer is underlined

==== contextual menu ====

The contextual menus are opened by right-clicking on a layer of the table of contents. They vary according to the selected layer.

{{pdm-toc.png?nolink|Construction layers}}{{pdm-toc2.png?nolink|Support themes}}

  * Name of the layer
  * Edit this layer(construction layers only)\\ Remove layer(support themes only)\\
  * Move the selected layer in the table of contents\\ {{man:pdm-tocmove.png?nolink}}
  * Display management of the vertex (line and polygon layers type only)
  * Symbology management. This option can also be activated by double-clicking on the layer. (see chap. [[man:visualization#symbology|Symbology]])