![]() ![]() The history of DWG stretches back to the 1970s, predating the program with which most users associate it: AutoCAD. Read on to learn the differences between the two formats, and why you may choose to use them. However, there are still some points which distinguish the two from one another. Both share many attributes common to all vector formats, including scalability and ease of editing. Two of the most common CAD file formats are DWG and DXF. Additionally, many GIS programs will accept CAD formats, while the reverse is not always true. This allows you to use your image for both mapping and surveying purposes and for various BIM applications. The range of vector entities lend themselves to different cartographical features: polygons for area measurement lines for features such as roads points for individual locations.Ĭonvert Your Raster Image to DXF for GIS ApplicationsĬhoosing to convert your GeoTIFF to a CAD file format gives you the option to use your images in both CAD and GIS programs. That’s because CAD formats allow you to use your image as more than a simple backdrop, but as a way of displaying and contextualizing more information. However, converting to a CAD format, such as DXF, gives the user greater possibilities. A GeoTIFF image may, for example, serve as the backdrop to a map system. Firstly, GeoTIFF’s georeferencing data means that it has applications in GIS programs. ![]() The specific nature of GeoTIFF, however, adds several more reasons. When you convert your GeoTIFF to DXF or DWG, you can associate each element of the image with a complex set of properties. While GeoTIFF files allow users to attach data to an image in the form of tags, it is not possible to attach data to individual elements within that image.Vector formats, on the other hand, allow users to edit each line or object individually. A further disadvantage of raster images is their lack of structure.Converting to a vector format, meanwhile, allows for infinite scalability. As a raster image format, you can’t zoom into or scale a GeoTIFF file without suffering pixelation and loss of quality.As such, many of the reasons to convert GeoTIFF to CAD formats are the same as those for converting from TIFF to DXF: Both allow the storing of high-quality raster images, either with or without compression. On the right is a zoomed-in section of the map, which has maintained its quality.ĭespite the difference in tags, GeoTIFF is very similar to its parent format. The image on the left is a vector map of the city of Cluj-Napoca, Romania. For more information, check out the full list of GeoTIFF tags. Examples of data within a GeoTIFF file include:īe aware, however, that not every program will necessarily support or use all of GeoTIFF’s tags. Amongst these is GeoTIFF, which is an extension of TIFF that allows users to include georeferencing data inside those tags.Ī wide range of cartographic, GIS, and other organizations worked together to define the tags that form part of today’s GeoTIFF file format. ![]() Some programs do still wish to accept extra tags, though-and to make compatibility and collaboration easier, developers have created a number of extensions to the basic TIFF format. To combat this, a set of Baseline TIFF Tags exist as a common denominator that all TIFF readers should support. After all, users could not reasonably expect all programs to support every possible tag and extension. The benefits that come with such flexibility, however, come with a price: compatibility issues. As a result, TIFF files may include a wide variety of different tags. Additionally, TIFF is an extensible file format which gives programmers the freedom to add relevant tags for their work. ![]() The ‘T’ in TIFF stands for Tagged, and refers to the ability to attach metadata to your image in the form of tags. It’s impossible to discuss GeoTIFF without talking about the format on which it is based: TIFF. Converting a GeoTiff to CAD with Scan2CAD ![]()
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