Patrik Silva

8 Questions 31 Answers 0 Followers

Questions related from Patrik Silva

Where to get tide and wave height "spatial" data and how to process and interpret them to conduct Coastal Vulnerability Index research?

Hi @all I am assisting my colleague in conducting research about the Assessment of the Coast Vulnerability Index in Boavista Island, Cape Verde. I would like to know where I can find/get data...

03 July 2022 1,654 0 View

What is the minimum number of observations that should be used to run a kriging interpolation?

Dear all, I know it might depend also in the distribution / behavior of the variable that we are studying. The sample spacing must be able to capture the spatial dependence . But, since Kriging...

11 April 2020 4,704 21 View

How were geological and soils maps made before satellite data era?

It seams to be a very complicated and time consuming task...Was it done manually and then digitized?

11 January 2020 1,089 25 View

What is the best physical geography sources (literature's), where I can learn field work techniques?

Data collection, river flow measurements, three height, cross sections of rivers, velocity of water flow, identification of rocks, geomorphology etc.

12 March 2019 8,262 17 View

What should I do with this two outliers, which I know their causes?

Hi all, I have aggregated count data of criminal incidents in each neighbourhood of a particular city. I also have the population of each of those particulars neighbourhoods. I want to create a...

27 September 2018 6,931 4 View

When should I transform my variables in order to apply Pearson correlation?

I have a set of urban morphology index (continuous variable) and I have a set of rate of crimes (per type). I want to apply Pearson correlation to see the relationship between the two set of...

19 September 2018 9,207 4 View

Which function should I use to highlight low and high values in my data (variable)?

Let's I have the a have a variable "A" which range from 80 (Min) to 50000 (Max) and the mean is 2500. I want to highlight both, low values and high values. Which function should I use to weight my...

08 May 2018 3,292 6 View

Is there any rule to construct a good color progression value (color sequence) to use in choropleth map?

I was doing some research, and I have read somewhere on the internet that is not recommended to use homogeneous range of values for color progression between classes (eg., 20%, 40% 60% 80%, 100%)...

01 January 1970 4,229 1 View