1.0DANShttps://dans.knaw.nl/en/Ingrid Korverrich600338<blockquote class="wp-embedded-content" data-secret="cvIGgPAFSm"><a href="https://dans.knaw.nl/en/file-formats/geographical-information-systems-gis/">Geographical Information Systems (GIS)</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://dans.knaw.nl/en/file-formats/geographical-information-systems-gis/embed/#?secret=cvIGgPAFSm" width="600" height="338" title="“Geographical Information Systems (GIS)” — DANS" data-secret="cvIGgPAFSm" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://dans.knaw.nl/wp-includes/js/wp-embed.min.js </script> With GIS, or Geographical Information Systems, digital maps and images are made. It usually concerns vector images with an underlying data table as the basis. This table can be opened as tabular data within the GIS application. Preferred formats  GML (.gml) MIF/MID (.mif / .mid) GeoJSON (.json) Non-preferred Esri Shapefile (.shp and related files) MapInfo (.tab and related files) […]