Maps in p:IGI+

Usage: Map --> Open map...

How to use in practice

Maps

Although not a specialised mapping package, p:IGI+ maps allows the spatial display your data, along with geospatial vector data in the form of ESRI Shapefiles (.shp). The plotting of wells uses latitude (Lat.Well) and longitude (Long.Well) coordinates, assuming the use of the WGS84 geoid. Note that if your data is not recorded in the WGS84 geoid no conversion currently takes place. Samples not assigned to a well e.g. outcrop or seep locations will be grouped into sites, and these sites will be plotted using latitude (Lat.Sample) and longitude (Long.Sample) coordinates, again assuming a WGS84 geoid. Wells and samples with only local (X and Y) co-ordinates will currently not be shown on a map, even if a well defined map projection is provided with the coordinates.  

p:IGI+ uses Bing maps (©Microsoft Corporation 2019) as its base mapping provider. The use of Bing maps means p:IGI+ requires an internet connection to display maps. Maps can still be used without an internet connection; however no default base mapping will be shown.

Creating a map

To create a new map, simple go to the Map menu and select New map... or use the New Map icon on the toolbar. The only option when creating a map is to give it a name. This will be the map artefact name. You can create multiple maps (and use the right-click Clone option on the artefact), which can be useful if you want to compare different properties spatial distribution side by side.

Once created the map will show the well sites (triangles) and non-well (outcrops, seeps, slicks etc) sites (squares). The map has its own "local toolbar" to allow you to interact with the map function. Each icon has a tooltip that describes its role, which is shown on hover. The map works similarly to graphs, in the you can pan / zoom, zoom to data (by default, on creation the map opens in the world view), and brush data from the map, as shown above. Not a single site on a map might correspond to many samples on a graph. If just one sample on a graph is brushed from a site, that site is highlighted on the map, even if the e.g. 100 other samples are not selected.

Maps are fully fledged artefacts, so you can drop sample sets onto maps to filter what is shown too. A site will only be 'unshown' on the map if all samples from that site have been excluded by the sample set.

Using palettes with maps

If you drop a discrete colour palette (e.g. of sample type, or any other text property) onto a map this will show the presence / absence of the different classes at each site. 

Once a discrete colour palette is applied, all sites are changed to disk symbols, and an additional menu item to select the mode of colouring is provided in the local map toolbar. The default option is occupancy which shows the presence / absence of each class at each site, but you can also change this to frequency which shows a mini pie chart at each site (shown above).

Continuous (numeric properties) colour and size palettes can also be applied to maps. In this case the maps will by default show the mean values at the site locations, so for example dropping a TOC colour palette will show the spatial distribution of mean TOC. Once a continuous colour and / or size palette has been applied the user is given the choice of which statistic to show, again from the local map toolbar.

The statistics you can select are the same statistics as provided on the statistics artefact. These can be used to show the spatial distribution of a range of statistics. By applying sample sets, for example selecting only those samples in a given stratum, you can easily now explore the spatial variability within a given interval.

Styling the map

Several different default base mapping styles are available, and are selected using the drop down on the top left of the map:

• Road - Provides Land/Sea/national parks with no elevation data along with location labels, roads and boundaries
• Aerial - Provides both Bathymetric and Topographic detail
• Aerial with labels - Provides both Bathymetric and Topographic detail with location labels, roads and boundaries
• White - Provides a totally white base maps

Shapefiles

Shapefiles can be applied to a map providing geospatial context to a map. This is especially helpful when wells are located offshore. Currently:

• Individual shapefile size is limited to 10Mb.
• A maximum of 5 shapefiles can be used per map as large numbers of shapefiles can slow mapping performance.
• Shapefiles are not stored when the project is saved to keep project size manageable, but a link to the location of the Shapefile is, so as long as the files are still in the same place they will be shown when the project is re-opened. 

Entering the Shapefile Manager, accessible from the local map toolbar, provides control over:

• The appearance of layers on the map
• The appearance of layers in the legend
• The label property which appears on hovering over a Layer point or polygon

Drag and drop the layers to reorder (layers at the top are drawn at the front).

Once you are happy with the look of the map, you can copy the content to include is presentations and reports. Ctrl-C will copy the map and any legends currently visible. To copy only the map use right click Copy map. If you right click on the legends you can copy each legend individually, or all legends as a group. This makes it easier to layout your map nicely in your presentation.

Video tutorials

None Available

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