Posts Tagged ‘ image() ’

Adding watermarks to plots

May 22, 2012
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Adding watermarks to plots

A question was raised today on the mailing list: Is there an easy way to add a watermark to a ggplot?There are several options, depending on the type of watermark and the required level of control over the output,add a text label using annotate (th...

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Scatter plots with images

September 4, 2011
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Edward Tufte has written extensively on the presentation of data covering good and bad practice. He has made a number of suggestions for adaptations of regularly used graph types to assist with the interpretation and understanding of data. One idea for enhancing scatter plots covered in Tufte’s book Beautiful Evidence is the use of images

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Displaying data using level plots

May 3, 2010
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Displaying data using level plots

A level plot is a type of graph that is used to display a surface in two rather than three dimensions – the surface is viewed from above as if we were looking straight down and is an alternative to a contour plot – geographic data is an example of where this type of graph

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Simulation of Burning Fire in R

June 11, 2009
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Simulation of Burning Fire in R

inlin Yan posted a cool (hot?) simulation of burning fire with R in the COS forum yesterday, which was indeed a warm welcome. I’m not sure whether our forum members will be scared by the “fire” under the title “Welcome to COS Forum”. The fire was mainly created by the function image() with

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