Easily and rapidly generate raster data in R, even for larger volumes of data, with an aesthetics-based mapping syntax that should be familiar to users of theggplot2package. Whilerasterlydoes not attempt to reproduce the full functionality of the Datashader graphics pipeline system for Python, th...
these data have been supplied as shapefiles, so I needed to quickly extract parts of a shapefile dataset and convert them to a raster in a standardised format. Preferably with as little repetitive coding as possible. So I created a simple and relatively flexible...
devtools::install_github("ilarischeinin/rasterpdf") Usage rasterpdf's main functionraster_pdf()can be used as any graphics device in R: library(rasterpdf) raster_pdf("Rplots.pdf") plot(iris) image(volcano) plot(EuStockMarkets) dev.off() ...
RD Traub,R Miles,RK Wong,... - 《Journal of Neurophysiology》 被引量: 255发表: 1987年 A VARI-based relative greenness from MODIS data for computing the Fire Potential Index The Fire Potential Index (FPI) relies on relative greenness (RG) estimates from remote sensing data. The Normalized ...
此外,由于mosaic()函数在运行时,除了两个栅格对象(Raster* object)类型的参数,还有其他的一些辅助参数,比如拼接时重叠区域该如何处理、处理时是否考虑NoData值的影响等;由于我们时通过do.call()函数来调用mosaic()函数,因此这些参数就不太好直接指定了。因此,我们可以通过$运算符,将mosaic()函数所需要的其他...
The data included web feature service as well as small-scale mapping products in vectorandrasterformats. daccess-ods.un.org daccess-ods.un.org 这些数据包括网上特稿服务以及向量和光栅格式的小规模测绘产品。 daccess-ods.un.org daccess-ods.un.org ...
具有连续值的栅格数据分箱绘制是地学绘图里的常用方法,python和R里面都可以比较简单地实现 下面介绍R的实现方式,主要是scale_fill_stepsn/scale_fill_binned的函数设置。 scale_fill_stepsn(name = "Priority ranks", # 改图例名称 labels = rev(c("2.5%", "5%", "10%", "17%","30%","50%","75%...
An algorithm for extracting the spatial objects contained in raster image data is presented. Input to the algorithm is a Siemens computer-aided design (SIC... Riekert, W.-F - 《IEEE Computer Graphics & Applications》 被引量: 31发表: 1993年 METHOD OF CREATING A PRINTABLE RASTER IMAGE FILE ...
其中,本文是用R语言来进行操作的;如果希望基于Python语言实现类似的平均值求取操作,大家可以参考疯狂学习GIS:Python中ArcPy实现对多景长时间序列栅格遥感影像批量求取逐像元像素平均值与疯狂学习GIS:Python中whitebox实现忽略NoData值的长时间序列栅格遥感影像批量求取各像元平均值这两篇文章。
此外,由于mosaic()函数在运行时,除了两个栅格对象(Raster* object)类型的参数,还有其他的一些辅助参数,比如拼接时重叠区域该如何处理、处理时是否考虑NoData值的影响等;由于我们时通过do.call()函数来调用mosaic()函数,因此这些参数就不太好直接指定了。因此,我们可以通过$运算符,将mosaic()函数所需要的其他...