Daniel A. Zacarias

6 Questions 9 Answers 0 Followers

Questions related from Daniel A. Zacarias

How can I allocate more memory in R?

Hi all. . I'm trying to build range-diversity plots based on the Arita et al. (2011) script. My matrix is 136793 sites by 64 species. I've tried on a 4Gb Macbook Air and on a 64-bit Windows, but...

31 May 2020 6,201 0 View

How to calculate the number of land cover classes in a grid?

Hi All I'm on a project that aims to understand land cover changes as a result of rapid urbanisation. We are testing the hypothesis that urban growth homogenises the forms of land cover, that is,...

04 February 2020 560 4 View

How do I calculate areas in continuous raster of species distribution models (5 classes)?

I just generated continuous models of species distribution models using MaxEnt. Now I would like to calculate the areas (in ha) occupied by each suitability class (5 classes: very low (0 - 0.2),...

26 November 2015 3,980 10 View

How can I assign research results into one of the 4 categories outlined by the Doxey's irritation index?

In trying to understand community responses to tourism development, it is common to use the irritation index proposed by Doxey (1975). This model suggests that communities have (or may be in) one...

18 May 2015 4,760 4 View

Is there a relationship between a country's GDP and the amount of research produced by the same country?

In my study, I hypothesize that the amount of research produced by a specific country is a function of the country's population size and GDP. This stems from the thought that the higher the number...

27 April 2015 286 8 View

Behaviour of (potential) tourists when choosing Mozambique as a travel destination in the post-pandemic period

Dear friends/ colleagues One of my students is running a project trying to understand the behaviour of (potential) tourists when choosing Mozambique as a travel destination in the post-pandemic...

01 January 1970 5,595 0 View