An example of a vector-based design is the business card you give your clients whenever an opportunity arises. This would be impossible with a rasterized format. For instance, depending on the use, a business logo needs to be resized now and then. This is because such projects are less detailed and are often subject to regular changes. Vector images are a more common sight in line-art applications such as logo designs. Other than, you also need not worry about extra space because even when enlarged, a vector-image uses relatively less space. It simply means that your image will retain its quality regardless of how you enlarge it. Nonetheless, worry not as this does not mean you'll be dealing with calculus during editing. That is why you'll sometimes hear someone refer to the lines, shapes, and curves of a vector-based graphic as vertices and paths. The resolution of vector images is often dictated by mathematical equations. Vector-based data is often made up of various lines, shapes, and curves. This explains why they are a preferred option when it comes to web applications. While on the one hand, it's a downside, on the other hand, the pixel-based structure of a rasterized image is also an advantage as it can be scaled down to fit applications that require small-detailed images. Thus, if space is an issue for you, it would be wise to downsize. You will, nonetheless, need a bigger disk as more pixels in an image mean that it'll use more disk space. Therefore, to ensure your raster-based images are of the best quality possible, use more pixels. Thus, the more pixels present per inch(PPI), the better the resolution and vice versa. The resolution of a raster image is however dictated by the number of pixels in every inch. When you zoom in or enlarge, you're practically forcing your device to create non-existent pixels, hence the pixelation. While raster graphics are popular, it's vital to note that due to their pixel-based structure, they tend to be grainy or blurry when resized or enlarged. Some of the most common raster formats include: In most cases, these pixels are square-shaped, regularly spaced, and each one carries a specific shade, which contributes to the vivid and detailed appearance of the image. Raster graphics are also known as bitmap graphics, and are made of thousands of tiny pixels arranged in a grid to form an image. Also known as a bitmap, a raster image is a graphic made up of thousands or even millions of colored dots known as pixels. Interpolation tools: Kriging, IDW, Splines, etc.If you use the internet every day, then you encounter raster graphics daily.The following are examples of tools in ArcMap will convert rasters to vectors or vectors to rasters: Expected types of analysis: some tools only work with raster or vector data. Available storage: some rasters are really large.Other factors that can influence your decision include: When topology is needed for the analysis.Spatial detail is important (When "close enough" isn't really good enough).Working with discrete data types: trees, buildings, property boundaries.Working with continuous data types: elevation, slope, satellite photos.Issues include:Ĭhoosing Between Data Models "Raster is faster but vector is corrector" Whenever you convert data from raster to vector or vector to raster, you will degrade the data by some amount. The image below looks very similar to the one above but now the watersheds are represented as rasters. The same logo vector file could be used on a small business card or on a huge sign on the side of a building. The "Feature To Raster" tool will convert these polygons to rasters. For example, logos are created with vectors. You can convert data between rasters and vectors but the nature of the data will be very different.īelow is an example of watersheds in Humboldt County represented as Shapefiles. You'll want to select the data type based on the nature of the data and the analysis you want to perform on it. Many features can be represented as rasters or vectors.
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