jeffreyevans
commented
4 years ago I will check on this but, off the top of my head, there are two McCune papers the second being a modification to the original formula.
Best, Jeff
Jeffrey S. Evans, Ph.D., | Senior Landscape Ecologist & Biometrician The Nature Conservancy | Protected Lands Science Visiting Professor | University of Wyoming | Zoology & Physology Laramie, WY | jeffrey_evans@tnc.orgmailto:jeffrey_evans@tnc.org | (970) 672-6766<tel:(970)%20672-6766>
From: Paola Barajas Barbosa notifications@github.com Sent: Thursday, April 23, 2020 12:46 PM To: jeffreyevans/GradientMetrics GradientMetrics@noreply.github.com Cc: Subscribed subscribed@noreply.github.com Subject: [jeffreyevans/GradientMetrics] Heat Load Index - is this value in the formula wrong? (#7)
Dear Jeffrey Evans,
I have a question about a value in the HLI formula you wrote in the PDF, where you describe the Geomorphometry & Gradient Metrics toolbox for ArcGIS (https://github.com/jeffreyevans/GradientMetrics/blob/master/READ%20ME.pdfhttps://github.com/jeffreyevans/GradientMetrics/blob/master/READ%20ME.pdf).
In your PDF the formula for HLI appears like this: HLI = 0.039 + [0.808 β cos(π) β cos (π)] β [0.196 β sin(π)] β [0.482 β cos(π(πΌ)) β sin(π(πΌ))]
Then you cite McCune & Keon, 2002, as they are the authors of the formula. But, I see that in Table 2 of McCune & Keon, 2002 the value is different, i.e., 0.339.
I would assume this may be a typo in your PDF document, right?
This I just spot last week thanks to a very friendly and detailed review I got from a paper I submitted. I am using some of your metrics in my research.
Looking forward to your response about this little issue. Best, Paola
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paolabarajas
Dear Jeffrey Evans,
I have a question about a value in the HLI formula you wrote in the PDF, where you describe the Geomorphometry & Gradient Metrics toolbox for ArcGIS (https://github.com/jeffreyevans/GradientMetrics/blob/master/READ%20ME.pdf).
In your PDF the formula for HLI appears like this: HLI = 0.039 + [0.808 β cos(π) β cos (π)] β [0.196 β sin(π)] β [0.482 β cos(π(πΌ)) β sin(π(πΌ))]
Then you cite McCune & Keon, 2002, as they are the authors of the formula. But, I see that in Table 2 of McCune & Keon, 2002 the value is different, i.e., 0.339.
I would assume this may be a typo in your PDF document, right?
This I just spot last week thanks to a very friendly and detailed review I got from a paper I submitted. I am using some of your metrics in my research.
Best, Paola