grdimage reads a 2-D grid file and produces a gray-shaded (or colored) map by building a rectangular image and assigning pixels a gray-shade (or color) based on the z-value and the CPT file. Optionally, illumination may be added by providing a file with intensities in the ±1 range or instructions to derive intensities from the input data grid.

image reads an Encapsulated PostScript file or a raster image file and plots it on a map.

image 官方文档: image. 简介: 将图片或EPS文件放在图上. image 模块可以读取EPS文件或任意一个光栅图片文件，并将其画在图上。 该模块的几个主要用途： 将多张图合并到一张图上. 将自己单位的 logo 放在 GMT 生成的图上. 将一般图片放在图上. 必须选项 imagefile

GMT will automatically detect standard image files (Geotiff, TIFF, JPG, PNG, GIF, etc.) and will read those via GDAL. For very obscure image formats you may need to explicitly set img_in , which specifies that the grid is in fact an image file to be read via GDAL.

该命令可以读取一个 EPS 文件或光栅图片格式，并将其画在地图上。 +w[-]<width>[/<height>] 直接指定图片的尺寸。 若未给定 <height> 则按照 <width> 以及原图的横纵比进行缩放；若 <width> 为负值，则使用其绝对值作为宽度，并使用PS的图片操作符将图片插值到设备的分辨率.

Jul 9, 2020 · Is there a command in GMT to convert web mecator to wgs84,which can be applied in satellite image (which have three band)? The best for it is that you use the GDAL program gdalwarp. Thank you Joaquim! I’ll try it! Then show the process on forum!

grdimage 可以读取一个grd网格文件，在每个网格节点上绘制小矩形并根据z值填充颜色，从而生成彩色图层。 grdimage 也可以读取三个分别包含red、green、blue值的网格文件绘图。 用户可以使用 -I 可选项设置光照效果。 请注意，在使用地图投影绘图时，每个网格节点上绘制的小矩形并不会根据所选的投影方式进行变形。 因此当网格间距较大时，绘制出的图像会产生一定的失真与变形。 此时可以使用 -E 选项设置一个较大的dpi值，将图像重采样成较高的分辨率缓解这一问题。 当 …

image reads an Encapsulated PostScript file or a raster image file and plots it on a map.

The first step is to create an image using a standard GMT script (with modern mode) that will serve as the base for the animation. Important Step Goal : Create the first image of the animation.

Search from Greenwich Mean Time stock photos, pictures and royalty-free images from iStock. For the first time, get 1 free month of iStock exclusive photos, illustrations, and more.