3279 search results for "map"

Overcoming D3 Cartographic Envy With R + ggplot

September 25, 2014
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Overcoming D3 Cartographic Envy With R + ggplot

When I used one of the Scotland TopoJSON files for a recent post, it really hit me just how much D3 cartography envy I had/have as an R user. Don’t get me wrong, I can conjure up D3 maps pretty well and the utility of an interactive map visualization goes without saying, but

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Google location data — Where I’ve been.

September 25, 2014
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Google location data — Where I’ve been.

I was emailed by a friend that was looking into their google location data and had asked if I had ever used a json file before in R. I said I had not, but I knew there were packages to do such things. The things I sent were things he had already tried,...

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Google location data — Where I’ve been.

September 25, 2014
By
Google location data — Where I’ve been.

I was emailed by a friend that was looking into their google location data and had asked if I had ever used a json file before in R. I said I had not, but I knew there were packages to do such things. The things I sent were things he had already tried,...

Read more »

How to draw venn pie-agram (multi-layer pie chart) in R?

September 25, 2014
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How to draw venn pie-agram (multi-layer pie chart) in R?

I was wondering how to draw a venn diagram like pie chart in R, to show the distribution of my RNA-seq reads mapped onto different annotation regions (e.g. intergenic, intron, exons etc.). A google search returns several options, including the nice one...

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DescTools: a new R "misc package"

September 25, 2014
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DescTools: a new R "misc package"

by Joseph Rickert One of the most difficult things about R, a problem that is particularly vexing to beginners, is finding things. This is an unintended consequence of R's spectacular, but mostly uncoordinated, organic growth. The R core team does a superb job of maintaining the stability and growth of the R language itself, but the innovation engine for...

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How Many Paths are Possible in an 18 Hole Round of Match Play Golf?

September 25, 2014
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How Many Paths are Possible in an 18 Hole Round of Match Play Golf?

In honor of the Ryder Cup, here's a fun puzzle for the mathematically inclined golfer to consider: how many different paths are possible in an 18 hole round of match play golf? If you'd rather not wade through the math then you can skip ahead to the "practical exploration" section of this post to see some actual match play...

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Changing the Light Azimuth in Shaded Relief Representation by Clustering Aspect

September 24, 2014
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Some time ago I published an article on "The Cartographic Journal" regarding a method to automatically change the light azimuth in shaded relief representations.This method was based on clustering the aspect derivative of the DTM. The method was develo...

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PubMed Publication Date: what is it, exactly?

September 23, 2014
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PubMed Publication Date: what is it, exactly?

File this one under “has troubled me (and others) for some years now, let’s try to resolve it.” Let’s use the excellent R/rentrez package to search PubMed for articles that were retracted in 2013. 117 articles. Now let’s fetch the records in XML format. Next question: which XML element specifies the “Date of publication” (PDAT)?

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Seeing the (day)light with R

September 23, 2014
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Seeing the (day)light with R

The arrival of the autumnal equinox foreshadows the reality of longer nights and shorter days here in the northeast US. We can both see that reality and distract ourselves from it at the same time by firing up RStudio (or your favorite editor) and taking a look at the sunrise & sunset times based on

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How to publish R and ggplot2 to the web

September 23, 2014
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How to publish R and ggplot2 to the web

by Matt Sundquist, Plotly Co-founder It's delightfully smooth to publish R code, plots, and presentations to the web. For example: Shiny makes interactive apps from R. Pretty R highlights R code for HTML. Slidify makes slides from R Markdown. Knitr and RPubs let you publish R Markdown docs. GitHub and devtools let you quickly release packages and collaborate. Now,...

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