04.09.2016 Views

QGIS for Archaeologists – A Basic Guide Contents

42_BAJR_Guide_QGIS

42_BAJR_Guide_QGIS

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

<strong>QGIS</strong> <strong>for</strong> <strong>Archaeologists</strong> <strong>–</strong> A <strong>Basic</strong> <strong>Guide</strong><br />

A note from a lidar pedant: hillshades are a great first step to visualising lidar data but they pose<br />

some significant problems <strong>for</strong> mapping microtopography, namely that the features you will see are<br />

dependent on the direction and angle of the illumination you choose. The process of using light to<br />

highlight and shade areas is also problematic <strong>–</strong> what are you seeing / mapping when you look at the<br />

light and shade? Is this in the same place as the monument or has it been translocated by the<br />

hillshade visualisation?<br />

If you’d like to know more about other, more appropriate visualisation techniques to highlight<br />

microtopography from the Relief Visualisation Toolbox webpage developed by the Institute of<br />

Anthropological and Spatial Studies, ZRCSAZU Slovenia. You can download their stand-alone<br />

processing genie, the Relief Visualisation Toolbox, along with a detailed manual and even a<br />

powerpoint presentation about the visualisation techniques from this link (RVT <strong>–</strong> http://iaps.zrcsazu.si/en/rvt#v<br />

).<br />

34 | P age

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!