marmap: A Package for Importing, Plotting and Analyzing Bathymetric and Topographic Data in R
نویسندگان
چکیده
In this communication we introduce marmap, a package designed for downloading, plotting and manipulating bathymetric and topographic data in R. marmap can query the ETOPO1 bathymetry and topography database hosted by the NOAA, use simple latitude-longitude-depth data in ascii format, and take advantage of the advanced plotting tools available in R to build publication-quality bathymetric maps. Functions to query data (bathymetry, sampling information…) are available interactively by clicking on marmap maps. Bathymetric and topographic data can also be used to calculate projected surface areas within specified depth/altitude intervals, and constrain the calculation of realistic shortest path distances. Such information can be used in molecular ecology, for example, to evaluate genetic isolation by distance in a spatially-explicit framework.
منابع مشابه
SSN: An R Package for Spatial Statistical Modeling on Stream Networks
The SSN package for R provides a set of functions for modeling stream network data. The package can import geographic information systems data or simulate new data as a ‘SpatialStreamNetwork’, a new object class that builds on the spatial sp classes. Functions are provided that fit spatial linear models (SLMs) for the ‘SpatialStreamNetwork’ object. The covariance matrix of the SLMs use distance...
متن کاملDevelopment of a Seamless Multisource Topographic/bathymetric Elevation Model of Tampa Bay
Many applications of geospatial data in coastal environments require knowledge of the nearshore topography and bathymetry. However, because existing topographic and bathymetric data have been collected independently for different purposes, it has been difficult to use them together at the land/water interface owing to differences in format, projection, resolution, accuracy, and datums. As a fir...
متن کاملShelf-life estimation of recombinant hepatitis B vaccine using R software in comparison with WHO manual protocol
Introduction: Pharmaceutical companies as well as food and cosmetics manufacturers are legally required to provide a shelf-life label on their products packaging as part of their stability study report. There are different recommended software like R software package and SAS which can perform as shelf-life estimating tools for analyzing the data achieved by the stability testing of drugs and va...
متن کاملInvestigating the Effect of Topographic factors on the distribution of oriental beech in Hyrcanian forest, Iran
Studying the present and future distribution status of important forest species is a prerequisite for the need of conservation programs in order to play their undeniable role in tackling global climate change, land use change and air pollution. The purpose of this study was to determine the distribution of oriental beech (Fagus orientalis Lipsky) in forests of northern Iran under the influence ...
متن کاملPhysical Investigation of Space, Dosimetry of Space Ionizing Ray Effect (Van Allen belts, Galactic Cosmic Rays and Solar particles) and Plotting Dose Map for Satellite Circular Missions
One of the main factors for satellite design is simulating of total ionizing dose due to space ionizing rays in devices used in space. By measurement of induced dose based on available data in different altitudes, expenses of designing, satellite weight and amount of needed fuel will be reduced. Optimum design of satellite for protecting satellite against ionizing radiation has considerable eff...
متن کامل