Podaris allows you to create and customise the appearance of datasets.
Datasets in Podaris are collections of GIS features that comprise a number of entities, each with a geographical location. These entities can take the form of polygons, linestrings or points and can contain a number of attributes of one of three types (string, number or boolean). Each entity may have values associated with each of its attributes.
Datasets allow you to put non-geographical data in a geographical context and use Podaris' geospatial analysis tools to perform sophisticated queries on the relationship between your datasets and the infrastructure in your project.
Creating a new dataset
In order to create a new dataset, click the layers tab, and then the icon next to datasets.
When the Data Layer Settings modal opens, you can title and colour your data layer. This name and colour will be displayed on the layers panel.
Creating new entities with the draw tool
Once you have created your layer, select it from the list of datasets in the layer panel and click the Draw Tool.
This will display the Tool: Draw panel.
In the Tool: Draw panel, you will have the option to choose from one of three geometry types:
After clicking the button, we can add connecting points on our map in order to create a complete polygon.
After clicking the button, we can add points on our map for each entity.
After clicking the button, we can add connecting points in order to form a linestring. This linestring will be completed on the map once the first and last points are connected together, or you press
So far, we have seen how to draw entities with no associated attributes. Should we choose to create attributes, we must first click the button next to your new dataset layer.
We then click Attributes and to create a new attribute.
Note, that creating attributes is optional and we are able to create and use dataset entities in later isochrone queries without any associated attributes.
All attributes require a name and a type. Available types are:
It is possible to enter a default value for each attribute. This is only a requirement for boolean attributes, which are true by default.
You may also create a list of allowed values for string and number types, as well as maximum and minimum values for number types.
Now, we can add an appropriate value for our chosen attribute and press
Styling datasets can be achieved by clicking the cog icon next to the dataset layer that you wish to modify.
The colour and stroke values of polygons, linestrings and points can all be styled here. In order to style string values that will be visible on your data layer next to each geometric element, select your preferred text attribute from the Labels box and style to your liking.
Viewing active layers
Clicking the button next to your chosen data layer will allow you to enable or disable its visibility.
Datasets can be easily exported by clicking the checkbox next to the dataset you wish to export and clicking the button.
Datasets can then be exported in a variety of formats.
|GeoJSON||An open standard format designed for representing simple geographical features|
|Shapefile||An Esri vector data storage format for storing the location, shape, and attributes of geographic features|
|KML||An XML notation for expressing geographic annotation and visualization within two-dimensional maps|
Copying and Rotating Dataset Geometry
This page has shown you how to create datasets from scratch in Podaris. You can find out how to import and customise existing datasets here.