Plotting Dip and Strike Readings

Dips and strikes? Dip and strike readings are simple but important geological measurements which can be used for structural and stratigraphic analysis. They are generally made by a field geologist directly at a geological outcrop. The dip of the geological layer is defined as the maximum inclination, in degrees, of the layer from the horizontal…

Tip 23: Loading Grids to ArcGIS

As geoscientists, we need to bring into ArcGIS various types of gridded data, including surfaces with elevation values, sub-surface horizons with depth values, or imagery with spectral values. If you don’t have access to a dedicated ArcGIS extension for loading such data types, like our own Data Assistant, then the way to load these into ArcGIS…

Creating Map Books with ArcGIS

Increase mapping productivity using Data Driven Pages If you want to create a PDF map book or a map series covering a study area, you can do so with minimum fuss by using Data Driven Pages (DDP). The only thing you need to accomplish this is a polygon layer with a column which contains unique…

Stop Making Basic Positioning Mistakes!

Make a geodetic New Year’s resolution: stop making basic positioning mistakes! This New Year, why not resolve to stop making basic geodetic positioning mistakes in your ArcGIS documents. We’re sure your boss, customers and organisation will thank you. To help you with this, Exprodat and Priemere GeoTechnology have collaborated to create a free tool, called the Geodetic…

Tip 22: Using Raster Catalogs

Using a Raster Catalog in ArcCatalog You can use a Raster Catalog to store high volumes of imagery. You can create them from the File menu in ArcCatalog, or from the Create Raster Catalog tool in ArcToolbox. When set up and populated, with some image tiles selected, it will look something like the image below: Using the…

Exprodat’s Petroleum ArcGIS Training Courses Go Global

Exprodat, the UK-based provider of petroleum GIS services, software and training, has developed a reputation around the world for its unique range of petroleum ArcGIS training courses leading the company to add a number of new locations for 2013. In 2013 Exprodat will offer training courses in Houston (Texas, USA), Perth (Australia), Calgary (Canada) and…

Exprodat’s End-of-Year Petroleum ArcGIS Training Offer

Exprodat, the UK-based provider of petroleum GIS services, software and training,  is offering a 10% discount on all 2013 petroleum ArcGIS training courses booked before the end of 2012. Sales & Marketing Director Jules Cullen explains the thinking behind the offer: “Many learning organisations and asset teams are already planning their GIS skills development programme…

Put the Pieces in Place with Exprodat at PETEX 2012

Exprodat, the UK-based provider of GIS consultancy, software and training for oil and gas is exhibiting at this year’s PETEX 2012 conference in London. To illustrate how Exprodat supplies all the pieces that petroleum companies need to get real benefit from their GIS technology, visitors to their PETEX 2012 stand will be challenged to solve…

Using OGP’s EPSG Area Polygons

The International Association of Oil and Gas Producers (OGP) recently released EPSG Area Polygons as a freely available spatial dataset that accurately defines the applicable extent of the CRSs and transformations in the EPSG Geodetic Parameter Dataset (EPSG Dataset). However, use of the Area Polygons dataset is not as straightforward as it could be, as…