Data Sources

A data source consists of one or more spatially referenced information contained by one of the Data Store available. MapMint supports several types of data sources in this section.

The pictograms used to illustrate the type of data source are shown in the following table.

Icon

Type
Vector point datasource icon

Point Vector Data Source

Vector line datasource icon

Line Vector Data Source

Vector polygon datasource icon

Vector Polygon Data Source

Raster datasource icon

Raster data source

vector data

supported formats

MapMint supports vector data formats listed below.

Format Code

** Required Files**

Comma Separated Value CSV csv
ESRI Shapefile SHP shp,dbf,shx,prj
GPX GPX gpx
Mapinfo MIF mif
KML KML kml
PostgreSQL/PostGIS PostGIS

connection PostGIS

Web Feature Service WFS

connection WFS

Note

Other formats <http://www.gdal.org/ogr/ogr_formats.html> __ supported by the OGR <http://www.gdal.org/ogr> library __ can also be used with MapMint.

Refer to the table

For a table of a data source, click on the “arrow” icon to the right of the: ref: datasource-table-label. This causes the éffichage of the data table. An example of this table is presented below.

|view|

Once the displayed table, and if it contains a sufficient number of entities, it is possible to navigate through the different pages of the table using the buttons “Previous” and “Next” displayed on the bottom navigation the table or by clicking directly on the number of the desired page.

In case the contents of the corresponding table in your data source is not displayed correctly, refer to the section: ref: data-datasource-encoding. then you must define the encoding of your data source, using the text fields provided for this purpose and clicking the “Set” button.

Note

The dropdown list at the top left of the table allows you to display 10, 15, 20, 25 or 30 units per page

Note

Clicking on a title of a column to sort the values in ascending / descending order or alphabetically.

Define the encoding of the character table

MapMint use UTF-8 encoding to display the default data source tables. However, it is common for data encoded in a different system to be loaded into the data management module. In this case, it is possible to assign a different encoding system in the text fields provided for this purpose, the right of the navigation bar.

Please enter the code of the desired encoding and click on the “Refresh” from the toolbar. This results in reloading the table and its display in the desired encoding.

Examples of character encoding are listed below for your information:

Code Description
utf-8

All Unicode international character has ASCII-compatible (English)

iso-8859-1

Latin alphabet No. 1 containing 191 characters of the Latin alphabet

iscii

Alphasyllabaire used in India, Sri Lanka and Bangladesh

viscii

Vietnamese modern Latin alphabet

shift-jis

Syllabary writing scenic and traditional Japanese languages

Note

Get more information about the character encoding of Wikipedia

raster data

supported formats

MapMint supports raster data formats listed below.

Format Code

** Required Files**

Arc/Info ASCII Grid AAIGrid asc
GeoTiff GTiff tif
JPEG JPEG jpg

Note

Oher formats ` <http://www.gdal.org/formats_list.html>`__ Supported by the GDAL can also be used with MapMint.

Look at the histogram

To view the histogram of a data source, click on the “arrow” icon to the right of the: ref: datasource-table-label. This causes unfolding of the histogram, as illustrated below.

|view|

The histogram of the data source allows you to view the distribution in the pixel array.

Note

It is possible to zoom in the histogram by holding your cursor and a drawing a rectangle.

Bar Data source tools

Icon

Action
Set  datasource permissions icon

Set access permissions for a data source

Convert datasource icon

Convert a data source

Downlaod datasource icon

Download a data source

Preview datasource icon

Preview a Data Source

Open datasource in manager icon

Open a data source in the card creation module

Delete datasource icon

Delete a data source

Access rights

A data source is accessible to all user groups by default. To change the permissions to access a layer, click on the corresponding icon in the: ref: datasource-table-label. This will open the window of access rights, as shown below:

View datasource histogram

Value

Definition

r

The user group access to reading in bed

w

The user group to access the write layer

x

The user group to access ...

Add Type single or multiple groups with the “Add” button, this entails adding drop-down lists in the window. Adjust the values **r ** **w ** and **x ** and then click the “Submit” button. The window closes and recording changes is stated at the top of your screen in a green headband.

Convert a data source

Data conversion is covered in part:: ref: data-processing.

Downloading

To download a data source on your computer, just click on the corresponding icon in the: ref: datasource-table-label. This causes the direct download of the data, stored in a .zip file

preview

To preview a data source, please click on the corresponding icon in the: ref: datasource-table-label, it shows a preview bubble as shown below.

** Source vector data**

** Source Raster data **

Prévisualiser une source de données vectorielles Prévisualiser une source de données vectorielles

Note

vector data sources are previewed with a default style (purple filling and dark gray border)

Warning

External WMS type of data sources do not have the preview functionality

Removal

To remove a data source, please click on the corresponding icon in the: ref: data source-table-label. This opens the blanking window illustrated below.

deeds

Click the “Delete” button to delete the data. The window closes and the deletion of the data source is stated at the top of your screen in a green headband.

Warning

The use of this feature removes the source of the data storage space and also removes the physical data sets on the server. This action is permanent and cannot be undone.

Opening

To open a data source in the ../maps /index, please click on the corresponding icon in the Bar Data source tools. This causes the opening of the data source in the ../ maps/index. The data source is added to the root of the tree layers in a project and Untitled_0 shown with the default style.

Note

After loading the data source, it is recommended to save the project Untitled_0 under an appropriate name