1223 search results for "Maps"

AntWeb – programmatic interface to ant biodiversity data

February 18, 2014
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AntWeb – programmatic interface to ant biodiversity data

Data on more than 10,000 species of ants recorded worldwide are available through from California Academy of Sciences' AntWeb, a repository that boasts a wealth of natural history data, digital images, and specimen records on ant species from a large community of museum curators. Digging through some of the earliest announcements of AntWeb, I came across...

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Changed and new things in the new version of rgbif, v0.5

February 17, 2014
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rgbif is an R package to search and retrieve data from the Global Biodiverity Information Facilty (GBIF). rgbif wraps R code around the to allow you to talk to GBIF from R. We just pushed a new verion of rgbif to cran - v0.5.0. Source and binary files are now available on CRAN. There are...

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“Digit Recognizer” Challenge on Kaggle using SVM Classification

February 14, 2014
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“Digit Recognizer” Challenge on Kaggle using SVM Classification

This article is about the “Digit Recognizer” challenge on Kaggle. You are provided with two data sets. One for training: consisting of 42’000 labeled pixel vectors and one for the final benchmark: consisting of 28’000 vectors while labels are not … Continue reading → The post “Digit Recognizer” Challenge on Kaggle using SVM Classification appeared first on...

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3D Plots in R

February 13, 2014
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3D Plots in R

by Joseph Rickert Recently, I was trying to remember how to make a 3D scatter plot in R when it occurred to me that the documentation on how to do this is scattered all over the place. Hence, this short organizational note that you may find useful. First of all, for the benefit of newcomers, I should mention that...

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Valentines-day full moon

February 13, 2014
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Valentines-day full moon

Introduction A wise person told me that it will be a full moon on the upcoming Valentine’s Day, but that it will be a long time until another one. I decided to check this with astronomical calculation. Procedure The Oce package has a function called moonAngle() that returns, among other things, the illuminated fraction of the moon visible at any given...

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oce runlm function

February 11, 2014
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oce runlm function

Introduction As was expected, the runderiv() function has been both useful and deficient. Useful because it offers a good replacement for smooth.spline() calculations of derivatives for things like N^2. And deficient because it only calculated derivatives, not values! Both an extension and a renaming were called for. The result is runlm(). Tests Below are the examples from its manpage, with...

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DailyMeteo.org – 2014 Conference

February 10, 2014
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DailyMeteo.org – 2014 Conference

Our friend Stefan has been participating in MilanoR since the beginning, and was one of the people who started using R intensively after the "Introduction to R" Quantide course. Since he is from Belgrade (Serbia), and takes part in the … Continue reading →

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oce map projection

February 10, 2014
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oce map projection

Introduction Soon after map projections were added to Oce, bug reports showed that coastline plots in some projections were subject to anomalous lines that run horizontally on the plot. A ad-hoc scheme was code to try to prevent this, but it does not always work. Problems are compounded for filled coastlines. I had thought this was a basic problem...

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N2 with runlm()

February 9, 2014
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N2 with runlm()

Introduction The default swN2() calculation in Oce uses a smoothing spline. One disadvantage of this is that few readers will know how it works. A possible alternative is to compute d(rho)/dz using the slope inferred from a running-window linear regression. Such a slope is provided by the new Oce function runlm(), which is tested here. (Note...

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Plot 3D Topographic Map in R

February 7, 2014
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Plot 3D Topographic Map in R

As we all know, there are a lot of packages provide functions to plot maps, such as ggmap, GEOmap, rworldmap and so on. For visualizing 2D topographic map, here is a good example. Besides, 3D topographic map is also easily to be plotted via some excellent functions and packages. The implement methods include but are not limited to … Continue reading...

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