To increase the file size with interpolation turned on, multiply the artwork’s current pixel dimensions by the above ratio and use the new numbers as your target image size for resizing. ![]() Quads, or quadrangles, generally refer to USGS maps that cover 7.5 arc. Then you simply select the quad you want. For instance, if you plan to increase the images resolution, than a 100 pixel wide grid square in the original image will need to be 3 times larger if you want it to print it at 300 pixels per inch or 300 dpi (standard resolution for printing) if you want to maintain the image without interpolation though and a square measures at ½ an inch, simply double the artworks dimensions in inches with interpolation turned off.ģ. National Geographics site gives you a handy GPS map to zone in on your target area. Calculate the ratio that you will then need to use to resize the image to mini scale (1 inch per 5 foot grid square or 300 pixels per inch resolution). Within Photoshop, Gimp, or a similar image editing program, measure the pixel dimensions of an individual grid square in whatever map you’d like to resize.Ģ. You can also resize the entire map from edge to edge but this will require a little more math for a successful result.ġ. Map Scale: 1: Ground Distance: Map Distance Units: At a map scale of 1:100000, 1 kilometer on the ground is equivalent to 1 millimeter on the map. The program MicroDEM has the ability to automatically tile and size a map image to a specified map scale and paper size, and then print it out on multiple pages for you. If interpolation is not enabled than the # of pixels per inch will go down in order to maintain the files original resolution and you may see some jaggedness at a close zoom level when printing since all you are seeing is what was contained in the image from the start. Calculate map distance given map scale and ground distance. A previous post dealt with printing maps larger than a printer’s biggest paper size (Printing Large Maps On A Small Printer. In this case the program has to generate new pixels to accommodate the increased pixel size. Select a good overlap where the pages can be joined later. Set the ‘Tile scale’ to 100 if not already at that setting. Go to ‘Page Scaling’ and select ‘Tile Large Pages’. Be aware though that the sharpness will diminish a bit in the new image if interpolation is enabled since the pixel count (resolution) is increasing. When you have the file open in Adobe Acrobat Select File > Print to open the ‘Print’ dialogue window. Use the or tool to draw a polygon around the area you want to map. You can then resize the image to 8"x10" in the programs “image size” dialogue box. Move and zoom the map to the correct location or enter a place in the search bar. For instance, if you’d like to print an 8x10 square section of a map to a sheet of letter sized paper than copy and paste that portion of the map to a new document generated from your clipboard. See complete Terms of Use for details.The basic guideline to resizing maps in a program like Gimp or Photoshop is to select an area you want to print, count the number of 5 foot grid squares in that area and resize that portion of the map so that its final dimensions in inches match the number of grid squares in that section. You must attribute the map correctly and you are not permitted to resell or sub-licence the map. The right to modify the map, the right to reproduce the map up to the print circulation that corresponds to the price category you chose, the right to reproduce the map in a downscaled version on your website and the right to transfer these usage rights to a third party (such as your customer). You will get an email with a proper invoice in PDF format (including VAT) plus another mail with a download link containing your map(s) as PNGs and PSDs. Get in touch if you are interested in volume discounts or need another payment method. ![]() Customers with volume discounts may pay on invoice. This way you can modify elements of the map without destroying the layers below.Ĭurrently with all major credit cards, PayPal or (from most European countries) by bank transfer. In the online map editor: You can fine-tune the design of the map (see the tab “Design your map”), you can draw routes, upload geo data (GPX, KML, GeoJSON), plot POIs on your map (using a big range of marker designs and colors) or scale the features of your map (smaller or bigger fonts for example).īeyond the online map editor: To make it as easy as possible for you to design breathtaking maps you get your map as a layered Photoshop file (.psd) or layered vector file (.svg). ![]() With the layered PSD and SVG you will be able, even after having created your map, to alter and modify your map as much as you want. You will get your map in both a high resolution PNG format, a layered Photoshop file (PSD) or a layered vector file (SVG). What file formats will I get the printable maps in?
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