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Humourless EuroMod.
Join Date: Mar 2004
Location: City of Mermaids, Denmark
Posts: 6,819
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Mapping accesspoints online and making gifs afterwards..
Gents and ladies,
Thought this might be interesting, considering all the post recently regarding making maps via mappoint etc.
If one doesn't have Mappoint or similar, there is a way of doing it online, which is quite easy.. www.gpsvisualizer.com is a free service, where one can upload either a CSV file or use the simple waypoint formular, and it will make a map based on the coordinates. This map is a SVG (Scalable Vector Graphics) overlay on a GIF file, and it works down to street level. Best of all for us europeans, it can even make maps covering our local areas.
But you need to do some stuff first, in order to clean up the data from netstumbler, so it can be mapped correctly.
A) Export a summary from Netstumbler (File - Export - Summary)
B) Open the exported summary file in your favorite text-editor ( Edlin fans can rejoice, as it still works)
It will look something like this :
Code:
# $Creator: Network Stumbler Version 0.4.0
# $Format: wi-scan summary with extensions
# Latitude Longitude ( SSID ) Type ( BSSID ) Time (GMT) [ SNR Sig Noise ] # ( Name ) Flags Channelbits BcnIntvl DataRate LastChannel
# $DateGMT: 2004-04-29
N 55.6345667 E 12.6406600 ( rootsdkwlan ) BSS ( 00:03:2f:20:7b:37 ) 10:13:13 (GMT) [ 42 191 149 ] # ( ) 0011 00002000 100 540 13
N 55.6345650 E 12.6405667 ( linksys ) BSS ( 00:0c:41:8c:25:f4 ) 10:21:52 (GMT) [ 20 69 49 ] # ( ) 0005 00000800 100 110 11
N 55.6330900 E 12.6377433 ( Wireless ) BSS ( 00:a0:c5:5d:2f:46 ) 10:25:42 (GMT) [ 47 96 49 ] # ( ) 0001 00000040 100 110 6
N 55.6314233 E 12.6421383 ( Michael & Mette ) BSS ( 00:0d:88:20:cc:ba ) 10:31:36 (GMT) [ 28 77 49 ] # ( ) 0011 00000040 100 110 6
We need to clean this up, so the gpsvisualizer understands it. What we need is the Lat/Lon coordinates, the station ID, and also the MAC address, and we need it comma-seperated.
C) First delete the four top lines, then search-and-replace the spaces with a comma, between the fields. Our file would then look like this :
Code:
N 55.6345667,E 12.6406600,( rootsdkwlan ),BSS,( 00:03:2f:20:7b:37 ),10:13:13 (GMT),[ 42 191 149 ],# ( ),0011,00002000,100,540,13
N 55.6345650,E 12.6405667,( linksys ),BSS,( 00:0c:41:8c:25:f4 ),10:21:52 (GMT),[ 20 69 49 ],# ( ),0005,00000800,100,110,11
N 55.6330900,E 12.6377433,( Wireless ),BSS,( 00:a0:c5:5d:2f:46 ),10:25:42 (GMT),[ 47 96 49 ],# ( ),0001,00000040,100,110,6
N 55.6314233,E 12.6421383,( Michael & Mette ),BSS,( 00:0d:88:20:cc:ba ),10:31:36 (GMT),[ 28 77 49 ],# ( ),0011,00000040,100,110,6
D) Now we need to remove the Type field, as we don't need it.. Search-and replace "BSS,(" with just a "(" and if there are peer type Wifi logged, do the same with the string "Ad-hoc,(". Now our file looks like this :
Code:
N 55.6345667,E 12.6406600,( rootsdkwlan ),( 00:03:2f:20:7b:37 ),10:13:13 (GMT),[ 42 191 149 ],# ( ),0011,00002000,100,540,13
N 55.6345650,E 12.6405667,( linksys ),( 00:0c:41:8c:25:f4 ),10:21:52 (GMT),[ 20 69 49 ],# ( ),0005,00000800,100,110,11
N 55.6330900,E 12.6377433,( Wireless ),( 00:a0:c5:5d:2f:46 ),10:25:42 (GMT),[ 47 96 49 ],# ( ),0001,00000040,100,110,6
N 55.6314233,E 12.6421383,( Michael & Mette ),( 00:0d:88:20:cc:ba ),10:31:36 (GMT),[ 28 77 49 ],# ( ),0011,00000040,100,110,6
E) Now we have to remove the N and E (or S & W) ID from the lat-lon coordinates. Gpsvisualizer expects N & E cooridnates to be positive, and S & W coordinates to be negative. So search-and-replace "N " and "E " with a "+" (or nothing, in effect deleting the "N " and the "E " prefix). And search-and-replace "S " and "W " with "-" if you are in that part of the world.
Now our file looks like this:
Code:
55.6345667,12.6406600,( rootsdkwlan ),( 00:03:2f:20:7b:37 ),10:13:13 (GMT),[ 42 191 149 ],# ( ),0011,00002000,100,540,13
55.6345650,12.6405667,( linksys ),( 00:0c:41:8c:25:f4 ),10:21:52 (GMT),[ 20 69 49 ],# ( ),0005,00000800,100,110,11
55.6330900,12.6377433,( Wireless ),( 00:a0:c5:5d:2f:46 ),10:25:42 (GMT),[ 47 96 49 ],# ( ),0001,00000040,100,110,6
55.6314233,12.6421383,( Michael & Mette ),( 00:0d:88:20:cc:ba ),10:31:36 (GMT),[ 28 77 49 ],# ( ),0011,00000040,100,110,6
F) We could clean up the rest of the file, as we don't need anything else, but if one is lazy, it's not necessary. Gpsvisualizer will just disregard the fields we don't need. Gps visualizer will make the map according to the top-left most coordinate and the bottomrightmost coordinate, so no need to specify anything else.. As an example, you can use the following data, containing 34 wifi-points that I found on a midday stroll near Copenhagen Airport, while U.S. Foggy Bottom Manager Colin Powell was visiting today ;-)
Code:
55.6345667,12.6406600,( rootsdkwlan ),( 00:03:2f:20:7b:37 ),10:13:13 (GMT),[ 42 191 149 ],# ( ),0011,00002000,100,540,13
55.6345650,12.6405667,( linksys ),( 00:0c:41:8c:25:f4 ),10:21:52 (GMT),[ 20 69 49 ],# ( ),0005,00000800,100,110,11
55.6330900,12.6377433,( Wireless ),( 00:a0:c5:5d:2f:46 ),10:25:42 (GMT),[ 47 96 49 ],# ( ),0001,00000040,100,110,6
55.6314233,12.6421383,( Michael & Mette ),( 00:0d:88:20:cc:ba ),10:31:36 (GMT),[ 28 77 49 ],# ( ),0011,00000040,100,110,6
55.6309600,12.6419483,( linksys ),( 00:0c:41:89:90:8a ),10:31:38 (GMT),[ 39 88 49 ],# ( ),0015,00000800,100,110,11
55.6329167,12.6424517,( default ),( 00:04:e2:60:72:b2 ),10:46:36 (GMT),[ 47 96 49 ],# ( ),0001,00000002,100,110,1
55.6326433,12.6434300,( default ),( 00:0d:88:36:0e:6b ),10:47:05 (GMT),[ 39 88 49 ],# ( ),0001,00000040,100,110,6
55.6320250,12.6447817,( Britter ),( 00:03:2f:1c:a7:59 ),10:48:29 (GMT),[ 55 104 49 ],# ( ),0015,00000040,100,110,6
55.6326750,12.6444117,( cph ),( 00:02:8a:97:c8:4f ),10:49:00 (GMT),[ 22 71 49 ],# ( ),0001,00000002,100,110,1
55.6330333,12.6441800,( cph ),( 00:02:8a:42:23:fa ),10:50:28 (GMT),[ 23 72 49 ],# ( ),0001,00000040,100,110,6
55.6346950,12.6446400,( NETGEAR ),( 00:09:5b:97:9f:ae ),10:55:26 (GMT),[ 31 80 49 ],# ( ),0421,00000800,100,540,11
55.6330167,12.6458250,( default ),( 00:0d:88:94:e7:6b ),11:02:17 (GMT),[ 36 85 49 ],# ( ),0461,00000040,100,540,6
55.6348183,12.6460217,( linksys ),( 00:06:25:98:50:a8 ),11:06:24 (GMT),[ 28 77 49 ],# ( ),0001,00000040,100,110,6
55.6348117,12.6457033,( Wireless ),( 00:a0:c5:5c:af:12 ),11:06:56 (GMT),[ 36 85 49 ],# ( ),0011,00000040,100,110,6
55.6346250,12.6442000,( RATHJ),( 00:03:2f:1c:8c:29 ),11:08:31 (GMT),[ 18 67 49 ],# ( ),0005,00000010,100,110,4
55.6347883,12.6433333,( linksys ),( 00:06:25:98:67:20 ),11:09:32 (GMT),[ 38 87 49 ],# ( ),0001,00000040,100,110,6
55.6364533,12.6426783,( steve ),( 00:a0:c5:46:7e:18 ),11:13:17 (GMT),[ 26 75 49 ],# ( ),0001,00000002,100,110,1
55.6366700,12.6434483,( Kastrupkrogen ),( 00:0c:41:18:65:0a ),11:13:27 (GMT),[ 31 80 49 ],# ( ),0011,00000040,100,110,6
55.6364717,12.6435667,( TDC ),( 00:a0:f8:51:63:a5 ),11:13:29 (GMT),[ 17 66 49 ],# ( ),0001,00000800,100,110,11
55.6366433,12.6435083,( Untitled ),( 00:e0:98:4c:3c:b2 ),11:13:45 (GMT),[ 34 83 49 ],# ( ),0431,00000400,100,540,10
55.6366433,12.6435083,( default ),( 00:03:2f:1f:48:f7 ),11:13:47 (GMT),[ 33 82 49 ],# ( ),0401,00000040,100,540,6
55.6366400,12.6422567,( birch ),( 00:80:c8:07:8d:f4 ),11:15:01 (GMT),[ 26 75 49 ],# ( ),0051,00000200,100,220,9
55.6369550,12.6424833,( TDC ),( 00:a0:f8:52:5e:ef ),11:17:14 (GMT),[ 20 69 49 ],# ( ),0001,00000800,100,110,11
55.6367883,12.6423517,( TDC ),( 00:a0:f8:51:63:dc ),11:18:34 (GMT),[ 20 69 49 ],# ( ),0001,00000040,100,110,6
55.6367883,12.6423517,( TDC ),( 00:a0:f8:51:64:fd ),11:18:37 (GMT),[ 20 69 49 ],# ( ),0001,00000040,100,110,6
55.6370300,12.6420750,( TDC ),( 00:a0:f8:51:64:e5 ),11:19:13 (GMT),[ 18 67 49 ],# ( ),0001,00000040,100,110,6
55.6370300,12.6420750,( TDC ),( 00:a0:f8:51:63:ae ),11:19:13 (GMT),[ 18 67 49 ],# ( ),0001,00000040,100,110,6
55.6373883,12.6416533,( TDC ),( 00:a0:f8:51:63:d5 ),11:19:48 (GMT),[ 20 69 49 ],# ( ),0001,00000800,100,110,11
55.6373883,12.6416533,( TDC ),( 00:a0:f8:51:63:f0 ),11:19:48 (GMT),[ 31 80 49 ],# ( ),0001,00000002,100,110,1
55.6384050,12.6403100,( COMPAQ ),( 00:50:8b:99:1d:c9 ),11:22:24 (GMT),[ 30 79 49 ],# ( ),0005,00000008,80,110,3
55.6377767,12.6351983,( default ),( 00:03:2f:20:01:53 ),11:29:19 (GMT),[ 25 74 49 ],# ( ),0005,00000040,100,110,6
55.6382783,12.6341733,( linksys ),( 00:06:25:bf:d2:d1 ),11:30:05 (GMT),[ 22 71 49 ],# ( ),0001,00000800,100,110,11
55.6376750,12.6355833,( Wireless ),( 00:a0:c5:5d:49:50 ),11:32:18 (GMT),[ 26 75 49 ],# ( ),0001,00000002,100,110,1
55.6367300,12.6363833,( Wireless ),( 00:a0:c5:61:09:92 ),11:34:19 (GMT),[ 36 85 49 ],# ( ),0401,00000040,100,540,6
G) Now for the fun part... Open a webbrowser and point it at the easy waypoinnts form on the gpsvisualizer site.
In the entry field for the waypoint data, change the first line to read:
latitude,longitude,name,description
then copy-paste the data from above underneath that line.
On the right side, change the max dimension to whatever size in pixels you like.. The higher the number, the more streetdetail you get.
Change the Background map selection to the Europe & US political map (street-level) entry.
If you want station ID and MAC address on the map, then select to show Waypoint names and Waypoint Descriptions.
Change the Waypoint Radius to 2 pixels.
Select "Open in a new window" under the waypoint field, and then click on the Draw the Map button. In a moment you will see the map in a new browser window. If you don't have the SVG plugin loaded, then it will install first.. (if it don't, then just use the link at the top of that page to install it.)
To save the map as a gif or jpg, maximise the browser window, press F11, and then just do a shift-printscreen (if you use Windows) to copy the current window to to the clipboard. Then paste it into your favourite graphicsprogram (or use Windows Paint), crop the picture so it only contains the map, and save in your pictureformat of choice, be it JPG, PNG, Gif or whatever.
Easy mapping, free as in gratis (but do support gpsvisualizer if you can.. Nice service, and deserves support).
Just my 0.02€'s worth...
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