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Search found 8 results on 1 pages for 'kmz'.

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  • How can I create a Google Visualization intensity/heat map using a KMZ document?

    - by dommer
    I'd like to create a Google Visualization API intensity/heat map based on UK counties. To do this, it appears that I need to use a custom KML/KMZ file that contains the county mapping data (which I've located). Could anyone provide me with a sample of how I can display an intensity map based on a KMZ file? I know how to display Google Visualization intensity maps in general. I just can't find any examples that use a custom KMZ file.

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  • How to transfer Google Earth route to Google Maps?

    - by macias
    I have a GPX route, I imported it into Google Earth. Everything is fine, so I saved it as KMZ file. Then just for check, I imported KMZ back into Google Earth. No problem. The thing is, I would like to work with Google Maps, no Google Earth and I am not able to transfer this route into Google Maps. Each time I select "show in Google Maps", the view is switched from Earth to Maps, but my route is missing. If I use standalone web browser and try to import any of the files directly to Google Maps, either it falls into some infinite loop (I wait ~hour and still see progress bar) or Google Maps shows error. Thus the question: how to transfer a route from Google Earth to Google Maps? The size of GPX file is 3MB, the size of KMZ is 1MB.

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  • unzip strings in javascript

    - by sopppas
    anyone knows a simple JS library implementing the UNZIP algorithm? No disk-file access, only zip and unzip a string of values. there are ActiveX, using WinZIP and other client dependent software for ZIP, written in JS. but no pure algorithm implementation, is it really difficult or non-functional? i would use it for displaying KMZ files in a HTML page with the GMap object (google maps). The KMZ file is just a zipped KML file. I want to unzip a KMZ file and feed the KML to GMap.

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  • adding many points to a personalized google map

    - by Tal Galili
    Hi all, I wish to create a personalized google map (as is shown here), I see it is possible to import a geo file (KML, KMZ or GeoRSS) with many points. I would love to use that but don't know how to create such a geo file in the first place. Which one should I use? What is the best way to create them? Thanks.

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  • How to output KML by GAE

    - by Niklas R
    Hi I use KML for a google map where entities have a geopt.db coordinate and soft memory limit was exceeded with 213.465 MB after servicing 1 requests total. The log says /list.kml 200 13130ms 10211cpu_ms 4238api_cpu_ms The file list.kml which outputs about 455,7 KB is a template as follows <?xml version="1.0" encoding="UTF-8"?><kml xmlns="http:// www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2" xmlns:kml="http://www.opengis.net/kml/2.2" xmlns:atom="http:// www.w3.org/2005/Atom"> <Document>{% for a in list %} <Placemark> <name> </name> <description> <![CDATA[<a href="http://{{host}}/{{a.key.id}}"> {{ a.title }} </a> <br/>{{a.text}}]]> </description> <Style> <IconStyle> <Icon> <href> http://www.google.com/intl/en_us/mapfiles/ms/icons/green-dot.png </href> </Icon> </IconStyle> </Style> <Point> <coordinates> {{a.geopt.lon|floatformat:2}},{{a.geopt.lat|floatformat:2}} </coordinates> </Point> </Placemark> {% endfor %} </Document> </kml> Is there a memory leak in the template or the python that passes the list variable? Can I improve using other template engine or other framework than default? Is kmz compression a good idea in this case? Thanks in advance for any suggestion where or how to change the code.

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  • Google maps API - info window height and panning

    - by Tim Fountain
    I'm using the Google maps API (v2) to display a country overlay over a world map. The data comes from a KML file, which contains coords for the polygons along with a HTML description for each country. This description is displayed in the 'info window' speech bubble when that country is clicked on. I had some trouble initially as the info windows were not expanding to the size of the HTML content they contained, so the longer ones would spill over the edges (this seems to be a common problem). I was able to work around this by resetting the info window to a specific height as follows: GEvent.addListener(map, "infowindowopen", function(iw) { iw = map.getInfoWindow(); iw.reset(iw.getPoint(), iw.getTabs(), new GSize(300, 295), null, null); }); Not ideal, but it works. However now, when the info windows are opened the top part of them is sometimes obscured by the edges of the map, as the map does not pan to a position where all of the content can be viewed. So my questions: Is there any way to get the info windows to automatically use a height appropriate to their content, to avoid having to fix to a set pixel height? If fixing the height is the only option, is there any way to get the map to pan to a more appropriate position when the info windows open? I know that the map class has a panTo() method, but I can't see a way to calculate what the correct coords would be. Here's my full init code: google.load("maps", "2.x"); // Call this function when the page has been loaded function initialize() { var map = new google.maps.Map2(document.getElementById("map"), {backgroundColor:'#99b3cc'}); map.addControl(new GSmallZoomControl()); map.setCenter(new google.maps.LatLng(29.01377076013671, -2.7866649627685547), 2); gae_countries = new GGeoXml("http://example.com/countries.kmz"); map.addOverlay(gae_countries); GEvent.addListener(map, "infowindowopen", function(iw) { iw = map.getInfoWindow(); iw.reset(iw.getPoint(), iw.getTabs(), new GSize(300, 295), null, null); }); } google.setOnLoadCallback(initialize);

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  • Need guidance on a Google Map application that has to show 250 000 polylines.

    - by lucian.jp
    I am looking for advice for an application I am developing that uses Google Map. Summary: A user has a list of criteria for searching a street segment that fulfills the criteria. The street segments will be colored with 3 colors for showing those below average, average and over average. Then the user clicks on the street segment to see an information window showing the properties of that specific segment hiding those not selected until he/she closes the window and other polyline becomes visible again. This looks quite like the Monopoly City Streets game Hasbro made some month ago the difference being I do not use Flash, I can’t use Open Street Map because it doesn’t list street segment (if it does the IDs won’t be the same anyway) and I do not have to show Google sketch building over. Information: I have a database of street segments with IDs, polyline points and centroid. The database has 6,000,000 street segment records in it. To narrow the generated data a bit we focus on city. The largest city we must show has 250,000 street segments. This means 250,000 line segment polyline to show. Our longest polyline uses 9600 characters which is stored in two 8000 varchar columns in SQL Server 2008. We need to use the API v3 because it is faster than the API v2 and the application will be ported to iPhone. For now it's an ASP.NET 3.5 with SQl Server 2008 application. Performance is a priority. Problems: Most of the demo projects that do this are made with API v2. So besides tutorial on the Google API v3 reference page I have nothing to compare performance or technology use to achieve my goal. There is no available .NET wrapper for the API v3 yet. Generating a 250,000 line segment polyline creates a heavy file which takes time to transfer and parse. (I have found a demo of one polyline of 390,000 points. I think the encoder would be far less efficient with more polylines with less points since there will be less rounding.) Since streets segments are shown based on criteria, polylines must be dynamically created and cache can't be used. Some thoughts: KML/KMZ: Pros: Since it is a standard we can easily load Bing maps, Yahoo! maps, Google maps, Google Earth, with the same KML file. The data generation would be the same. Cons: LineString in KML cannot be encoded polyline like the Google map API can handle. So it would probably be bigger and slower to display. Zipping the file at the size it will take more processing time and require the client side to uncompress the data and I am not quite sure with 250,000 data how an iPhone would handle this and how a server would handle 40 users browsing at the same time. JavaScript file: Pros: JavaScript file can have encoded polyline and would significantly reduce the file to transfer. Cons: Have to create my own stripped version of API v3 to add overlays, create polyline, etc. It is more complex than just create a KML file and point to the source. GeoRSS: This option isn't adapted for my needs I think, but I could be wrong. MapServer: I saw some post suggesting using MapServer to generate overlays. Not quite sure for the connection with our database and the performance it would give. Plus it requires a plugin for generating KML. It seems to me that it wouldn't allow me to do better than creating my own KML or JavaScript file. Maintenance would be simpler without. Monopoly City Streets: The game is now over, but for those who know what I am talking about Monopoly City Streets was showing at max zoom level only the streets that the centroid was inside the Bounds of the window. Moving the map was sending request to the server for the new streets to show. While I think this was ingenious, I have no idea how to implement something similar. The only thing I thought about was to compare if the long was inside the bound of map area X and same with Y. While this could improve performance significantly at high zoom level, this would give nothing when showing a whole city. Clustering: While cluster is awesome for marker, it seems we cannot cluster polylines. I would have liked something like MarkerClusterer for polylines and be able to cluster by my 3 polyline colors. This will probably stay as a “would have been freaking awesome but forget it”. Arrow: I will have in a future version to show a direction for the polyline and will have to show an arrow at the centroid. Loading an image or marker will only double my data so creating a custom overlay will probably be my only option. I have found that demo for something similar I would like to achieve. Unfortunately, the demo is very slow, but I only wish to show 1 arrow per polyline and not multiple like the demo. This functionality will depend on the format of data since I don't think KML support custom overlays. Criteria: While the application is done with ASP.NET 3.5, the port to the iPhone won't use the web to show the application and be limited in screen size for selecting the criteria. This is why I was more orienting on a service or page generating the file based on criteria passed in parameters. The service would than generate the file I need to display the polylines on the map. I could also create an aspx page that does this. The aspx page is more documented than the service way. There should be a reason. Questions: Should I create a web service to returns the street segments file or create an aspx page that return the file? Should I create a JavaScript file with encoded polyline or a KML with longitude/latitude based on the fact that maximum longitude/latitude polyline have 9600 characters and I have to render maximum 250,000 line segment polyline. Or should I go with a MapServer that generate the overlay? Will I be able to display simple arrow on the polyline on the next version. In case of KML generation is it faster to create the file with XDocument, XmlDocument, XmlWriter and this manually or just serialize the street segment in the stream? This is more a brainstorming Stack Overflow question than an actual code problem. Any answer helping narrow the possibilities is as good as someone having all the knowledge to point me out a better choice.

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