781 search results for "Maps"

Landscape Metrics with R, SDMTools, ImageJ and Bio7

February 2, 2012
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01.02.2012 Landscape metrics were developed to analyze spatial patterns of landscapes (e.g. composition and spatial arrangement). In R it is possible to calculate these metrics with the “SDMTools” package. Bio7 offers an easy to use interface to R and ImageJ and can use these tools to simplify a workflow to analyze image data (e.g. vegetation

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MINE: Maximal Information-based NonParametric Exploration

February 1, 2012
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MINE: Maximal Information-based NonParametric Exploration

There was a lot of buzz in the blogosphere as well as the science community about a new family of algorithms that are able to find non-linear relationships over extremely large fields of data. What makes it particularly useful is that the measure(s) it...

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Flight mapping in R

January 23, 2012
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Flight mapping in R

This map has been produced before (and much better) by others but who cares. This effort was achieved purely via the standard R plot function*. I believe the only departure from predecessor maps has been to order the list by … Continue reading →

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Credit rating by country

January 17, 2012
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Credit rating by country

The financial crisis has put a lot of pressure on countries' long-term foreign currency credit ratings, with France recently being downgraded by S&P. Wikipedia provides a list of countries by credit ratings as report by US rating agencies S&P, Fitch, ...

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How to map geographically-detailed survey responses?

January 17, 2012
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David Sparks writes: I am experimenting with the mapping/visualization of survey response data, with a particular focus on using transparency to convey uncertainty. See some examples here. Do you think the examples are successful at communicating both local values of the variable of interest, as well as the lack of information in certain places? Also, The post How...

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Amateur Mapmaking: Getting Started With Shapefiles

January 13, 2012
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Amateur Mapmaking: Getting Started With Shapefiles

One of the great things about (software) code is that people build on it and out from it… Which means that as well as producing ever more complex bits of software, tools also get produced over time that make it easier to do things that were once hard to do, or required expensive commercial software

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Exercise in grImport

January 13, 2012
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Exercise in grImport

Last week I used grImport for the first time. I decided to try perform another exercise using it. The task was to add voivodeship division of Poland.Standard R maps do not contain such a division. I have found it on r-forge in package  m...

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Coming of Age: R and Spatial Data Visualisation

January 10, 2012
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Coming of Age: R and Spatial Data Visualisation

I have been using R (a free statistics and graphics sof

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Mapping the Iowa caucus results: how it’s done with R

January 6, 2012
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Mapping the Iowa caucus results: how it’s done with R

If you've been following the presidential primary process here in the US, you've probably seen many maps of the results of the Iowa caucuses by now (such as this infamous one from Fox News). But you might be interested to learn how such maps can be made using the R language. The Offensive Politics blog explains the process in...

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Coat of arms of Poland challenge

January 5, 2012
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Coat of arms of Poland challenge

Last week I have experimented with coloring map of Poland in national colors. Vaidotas Zemlys improved on my effort by adding colors to map of Lithuania and posted a challenge to also add coat of arms to the plot. This proved to be a nice exe...

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