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Author Archives: Luke

About Luke

I am the Geology Department's Scientific Illustrator.

How to compress powerpoint presentations

These instructions are applicable to Powerpoint 2011 on MacOS and Powerpoint 2013 on PC (and probably versions on either side of these).

The size of your Powerpoint presentation is mostly going to be based to the number of images you have in your presentation, image size (especially if you are using MacOS), and your default compression settings (only applicable if you are using a windows PC).

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Plotting structural geology data in ArcGIS

Update: I suggest using ArcGIS Pro instead of ArcMap – if you need help with this let me know.

This tutorial covers plotting structural geology data in ArcGIS. In this tutorial I am going to use the example of plotting foliation data, but this is applicable to any data where a rotated symbol is required.

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Adding XY data to ArcGIS

This tutorial covers adding XY data to ArcGIS, so that you can view and work with the data in ArcGIS. By XY data I mean point data such as foliation that has a spatial (XY) component associated with it.

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Handling images in MS word mac 2011

These are instructions for handling images in MS word 2011 on MacOS, including instructions on outputting final PDF. These instructions probably also apply to versions form 2010-2014. Continue reading

Focus stacking images using macro or stereomicro photography equipment and Zerene stacker

This article has been specifically written for using the macro-photography setup or the stereomicroscope setup in the Imaging Lab (formerly called the Graphics Lab) in the geology department. Instructions are for using Zerene stacker to stack the images rather than photoshop because it is faster, easier and produces better results in all cases that I have seen. For example Zerene Stacker took 72s to stack 11 images and photoshop took 125s, the difference in stacking speed is even more pronounced when more images are used.

This post supersedes the previous focus stacking post I wrote which recommended using photoshop.

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