[tlocoh-info] showing duration of visit and visitation rate

Andy Lyons lyons.andy at gmail.com
Wed Jul 16 08:19:46 CEST 2014

Hi Julia,

Good questions. If I understand correctly, you want to use a scatterplot 
of hull metrics (revisitation and duration), which has been colored by 
overlaying a rainbow color wheel on the scatter plot, as the legend for 
a map of the hull parent points, so you can see where the hotspots of 
revisitation / duration fall on the landscape.  And you want to do this 
for multiple individuals overlaid on the same map, which you have 
discovered is not possible with tlocoh's plot function. Furthermore, 
exporting the hull parent points to a shapefile doesn't solve the 
problem, because even though all the hull metrics are exported when you 
export hull parent points (including the metrics of revisitation and 
duration), the rainbow color values are not exported in the attribute 
table, and ArcMap doesn't have the ability to color points based on the 
relative location of two attribute values in hull metric space.

Is that correct?

Before coming up with a solution, would you also want the color of the 
combined points to be drawn from the same colorwheel scatterplot? In 
other words, would you want to overlay the time use metrics for all of 
the individuals combined on the same scatterplot, apply a color wheel to 
it, and use that as the map legend (as opposed to coloring the points 
based on individual specific scatterplots)? A combined scatterplot would 
seem to be the best way to visually interpret the map, but of course if 
the sampling intervals for different individuals are quite different, 
then a combined scatterplot would be harder to interpret (e.g., the 
number-of-separate-visits metric for a 'high' revisitation rate for a 
dataset sampled every 20 minutes will be much greater than an equally 
high revisitation rate sampled every 4 hours.

Lastly, do you have any preference on where would be the ideal way to 
visualize this - in an R plot or ArcMap?

Lastly lastly, I don't fully understand this part of your question: 
"/And if there is a way for every single individual, is there also a 
possibility to summarize it in another graph?/"



7/15/2014 12:22 PM, Julia Krejci wrote:
> Dear tlocoh-list,
> I am looking for a way to display the visitation rate and duration of 
> visit I calculated for twelve individuals. I would like to see if the 
> hot spots of revisitation are located where I assumed them to be. It 
> would be ideal to project the output graph (rainbow colour-coded 
> points) onto a map. But I cannot export the information with the 
> exp.shp command. Is there another way to do it?
> And if there is a way for every single individual, is there also a 
> possibility to summarize it in another graph? I would like to see if 
> the hotspots are the same for all individuals or if they prefer 
> different areas.
> Thank you very much!
> Best wishes,
> Julia
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