#Raster file distance from land full#

In this image, we can see all the pixels a digital version of the Mona Lisa is made up of.

Figure 3.6: A Pixelated Version of the Mona Lisa Kind of like the cliché 'you can't see the forest because of the trees', meaning that you cannot see the entire forest if you are so close, you can only see the trees.

We would describe the image as pixelated, or the fact that the image pixels have become so large, that the only thing you can see is the pixel makeup of the image and not the image itself.

#Raster file distance from land full#

You may have seen the pixels of an image before when you try to post an picture to your social media account that was once a small sized picture and you’re trying to make it display full page. In fact, you can add a picture of your cat to the GIS, the GIS simply won't know where it should draw the raster data.Īll digital images (raster data) are comprised of a series of pixels (short for picture elements) arranged in in rows and columns to create a grid pattern. Both a picture of your cat Mogwai and a Digital Elevation Model (DEM) are seen as raster data by the software, the only difference being that the spatial raster, the DEM, has coordinate system information attached, allowing the GIS to know where in the world to 'put' when it's displayed on screen. In reality, raster data is any pixel-based picture data (JPG, PNG, TIFF for example) which is loaded into the software. Second in our list of spatial data types is raster data.