# World Map Kit Extractor output

**URL:** <https://community.thinkgeo.com/t/world-map-kit-extractor-output/7468>\
**Category:** World Map Kit\
**Created:** [February 13, 2015, 9:07am UTC](https://community.thinkgeo.com/t/world-map-kit-extractor-output/7468 "2015-02-13T09:07:35Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![Neil4](https://community.thinkgeo.com/letter_avatar_proxy/v4/letter/n/e68b1a/32.png) [@Neil4](https://community.thinkgeo.com/u/Neil4)\
**Post date:** [February 13, 2015, 9:07am UTC](https://community.thinkgeo.com/t/world-map-kit-extractor-output/7468/1 "2015-02-13T09:07:35Z")

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I’ve&nbsp;used&nbsp;the&nbsp;World&nbsp;Map&nbsp;Kit&nbsp;Extractor&nbsp;to&nbsp;pull&nbsp;out&nbsp;a&nbsp;portion&nbsp;of&nbsp;the&nbsp;world&nbsp;map&nbsp;and&nbsp;it&nbsp;seems&nbsp;to&nbsp;run&nbsp;just&nbsp;fine.&nbsp;&nbsp;The&nbsp;problem&nbsp;is&nbsp;that&nbsp;when&nbsp;I&nbsp;bring&nbsp;the&nbsp;resulting&nbsp;sqlite&nbsp;file&nbsp;into&nbsp;the&nbsp;OSM&nbsp;World&nbsp;Map&nbsp;Kit&nbsp;SDK&nbsp;Sample&nbsp;application&nbsp;some&nbsp;of&nbsp;the&nbsp;zoom&nbsp;levels&nbsp;appear&nbsp;to&nbsp;be&nbsp;missing.&nbsp;&nbsp;That&nbsp;is,&nbsp;as&nbsp;I&nbsp;zoom&nbsp;in&nbsp;the&nbsp;map&nbsp;will&nbsp;go&nbsp;blank&nbsp;after&nbsp;a&nbsp;few&nbsp;levels.&nbsp;&nbsp;I’ve&nbsp;also&nbsp;noticed&nbsp;some&nbsp;wide&nbsp;white&nbsp;bars&nbsp;across&nbsp;the&nbsp;map&nbsp;at&nbsp;certain&nbsp;points&nbsp;when&nbsp;using&nbsp;the&nbsp;extracted&nbsp;data.&nbsp;&nbsp;However,&nbsp;when&nbsp;I&nbsp;use&nbsp;the&nbsp;full&nbsp;map&nbsp;data&nbsp;everything&nbsp;works&nbsp;fine.&nbsp;&nbsp;I’m&nbsp;able&nbsp;to&nbsp;zoom&nbsp;in&nbsp;and&nbsp;see&nbsp;all&nbsp;the&nbsp;detail.&nbsp;&nbsp;I’m&nbsp;using&nbsp;4326&nbsp;for&nbsp;the&nbsp;source&nbsp;database&nbsp;srid&nbsp;when&nbsp;I&nbsp;do&nbsp;the&nbsp;extraction.&nbsp;&nbsp;Am&nbsp;I&nbsp;using&nbsp;the&nbsp;extractor&nbsp;properly&nbsp;or&nbsp;is&nbsp;there&nbsp;a&nbsp;different&nbsp;way&nbsp;that&nbsp;I&nbsp;should&nbsp;do&nbsp;this?

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**Author:** ![Ethan](https://community.thinkgeo.com/user_avatar/community.thinkgeo.com/ethan/32/19964_2.png) [@Ethan](https://community.thinkgeo.com/u/Ethan)\
**Post date:** [February 14, 2015, 11:44pm UTC](https://community.thinkgeo.com/t/world-map-kit-extractor-output/7468/2 "2015-02-14T23:44:02Z")

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Hi&nbsp;Neil,&nbsp;  
&nbsp;&nbsp;  
&nbsp;If&nbsp;you&nbsp;found&nbsp;the&nbsp;white&nbsp;blank&nbsp;area,&nbsp;please&nbsp;let&nbsp;us&nbsp;know&nbsp;the&nbsp;extent&nbsp;of&nbsp;it,&nbsp;so&nbsp;we&nbsp;can&nbsp;reproduce&nbsp;that.&nbsp;  
&nbsp;&nbsp;  
&nbsp;And&nbsp;World&nbsp;Map&nbsp;kit&nbsp;with&nbsp;SQLLite&nbsp;version&nbsp;is&nbsp;keep&nbsp;optimize&nbsp;these&nbsp;months,&nbsp;so&nbsp;please&nbsp;make&nbsp;sure&nbsp;you&nbsp;are&nbsp;using&nbsp;the&nbsp;latest&nbsp;version&nbsp;dll&nbsp;and&nbsp;latest&nbsp;version&nbsp;database,&nbsp;if&nbsp;the&nbsp;version&nbsp;is&nbsp;not&nbsp;the&nbsp;same,&nbsp;you&nbsp;will&nbsp;met&nbsp;some&nbsp;problem.&nbsp;  
&nbsp;&nbsp;  
&nbsp;Regards,&nbsp;  
&nbsp;&nbsp;  
&nbsp;Don

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**Author:** ![Neil4](https://community.thinkgeo.com/letter_avatar_proxy/v4/letter/n/e68b1a/32.png) [@Neil4](https://community.thinkgeo.com/u/Neil4)\
**Post date:** [February 16, 2015, 9:21am UTC](https://community.thinkgeo.com/t/world-map-kit-extractor-output/7468/3 "2015-02-16T09:21:21Z")

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Don,&nbsp;  
&nbsp;Thanks&nbsp;for&nbsp;responding.&nbsp;&nbsp;I’m&nbsp;not&nbsp;sure&nbsp;how&nbsp;to&nbsp;determine&nbsp;the&nbsp;version&nbsp;of&nbsp;the&nbsp;database,&nbsp;but&nbsp;we&nbsp;just&nbsp;recently&nbsp;purchased&nbsp;the&nbsp;WPF&nbsp;Desktop&nbsp;edition&nbsp;and&nbsp;the&nbsp;SDK,&nbsp;so&nbsp;I’m&nbsp;using&nbsp;the&nbsp;database&nbsp;from&nbsp;the&nbsp;link&nbsp;I&nbsp;was&nbsp;given&nbsp;(I&nbsp;received&nbsp;the&nbsp;link&nbsp;on&nbsp;Feb.&nbsp;2&nbsp;of&nbsp;this&nbsp;year,&nbsp;so&nbsp;I&nbsp;think&nbsp;we&nbsp;do&nbsp;have&nbsp;the&nbsp;latest&nbsp;db).&nbsp;&nbsp;As&nbsp;far&nbsp;as&nbsp;I&nbsp;can&nbsp;tell&nbsp;we’re&nbsp;using&nbsp;WPF&nbsp;Desktop&nbsp;Edition&nbsp;8.0&nbsp;(from&nbsp;the&nbsp;Product&nbsp;Center).&nbsp;&nbsp;The&nbsp;area&nbsp;I’m&nbsp;extracting&nbsp;is&nbsp;the&nbsp;default&nbsp;in&nbsp;the&nbsp;extractor:&nbsp;&nbsp;Upper&nbsp;left&nbsp;=&nbsp;-104.04,&nbsp;45.93&nbsp;&nbsp;Lower&nbsp;right&nbsp;=&nbsp;-96.4,&nbsp;42.5&nbsp;with&nbsp;a&nbsp;Source&nbsp;Database&nbsp;Srid&nbsp;of&nbsp;4326&nbsp;.&nbsp;&nbsp;I&nbsp;see&nbsp;the&nbsp;same&nbsp;type&nbsp;of&nbsp;results&nbsp;with&nbsp;zooming&nbsp;whether&nbsp;I&nbsp;have&nbsp;“Preserve&nbsp;Country&nbsp;Level&nbsp;Data”&nbsp;checked&nbsp;or&nbsp;not.

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**Author:** ![Ethan](https://community.thinkgeo.com/user_avatar/community.thinkgeo.com/ethan/32/19964_2.png) [@Ethan](https://community.thinkgeo.com/u/Ethan)\
**Post date:** [February 17, 2015, 3:13am UTC](https://community.thinkgeo.com/t/world-map-kit-extractor-output/7468/4 "2015-02-17T03:13:05Z")

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Hi&nbsp;Neil,  
  
  
  
I&nbsp;think&nbsp;our&nbsp;SQLLite&nbsp;world&nbsp;map&nbsp;kit&nbsp;data&nbsp;should&nbsp;be&nbsp;based&nbsp;on&nbsp;epsg&nbsp;3857,&nbsp;I&nbsp;did&nbsp;a&nbsp;test&nbsp;based&nbsp;on&nbsp;that&nbsp;and&nbsp;it&nbsp;looks&nbsp;the&nbsp;extent&nbsp;you&nbsp;mentioned&nbsp;shows&nbsp;map&nbsp;correct.&nbsp;Please&nbsp;see&nbsp;my&nbsp;screen&nbsp;capture&nbsp;as&nbsp;below:

 ![](https://community.thinkgeo.com/uploads/default/original/2X/d/df80fa31edeaff7107e04c9f20c3bf31f9e898b8.JPG)  
  
  
  
If&nbsp;you&nbsp;found&nbsp;I&nbsp;missed&nbsp;anything&nbsp;please&nbsp;let&nbsp;me&nbsp;know.  
  
  
  
Regards,  
  
  
  
Don

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**Author:** ![Ethan](https://community.thinkgeo.com/user_avatar/community.thinkgeo.com/ethan/32/19964_2.png) [@Ethan](https://community.thinkgeo.com/u/Ethan)\
**Post date:** [February 17, 2015, 3:18am UTC](https://community.thinkgeo.com/t/world-map-kit-extractor-output/7468/5 "2015-02-17T03:18:35Z")

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![](https://community.thinkgeo.com/uploads/default/original/2X/d/df80fa31edeaff7107e04c9f20c3bf31f9e898b8.JPG)

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**Author:** ![Neil4](https://community.thinkgeo.com/letter_avatar_proxy/v4/letter/n/e68b1a/32.png) [@Neil4](https://community.thinkgeo.com/u/Neil4)\
**Post date:** [February 17, 2015, 5:19pm UTC](https://community.thinkgeo.com/t/world-map-kit-extractor-output/7468/6 "2015-02-17T17:19:24Z")

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After&nbsp;some&nbsp;further&nbsp;testing&nbsp;I&nbsp;think&nbsp;I&nbsp;see&nbsp;what&nbsp;you&nbsp;mean.&nbsp;&nbsp;I&nbsp;was&nbsp;able&nbsp;to&nbsp;get&nbsp;a&nbsp;good&nbsp;extraction&nbsp;like&nbsp;you&nbsp;did&nbsp;from&nbsp;the&nbsp;LasVegas3857.sqlite&nbsp;file&nbsp;(the&nbsp;sample&nbsp;data)&nbsp;and&nbsp;zooming&nbsp;looked&nbsp;fine.&nbsp;&nbsp;However,&nbsp;when&nbsp;I&nbsp;tried&nbsp;the&nbsp;full&nbsp;map&nbsp;data&nbsp;(WorldMapKit4326.sqlite)&nbsp;using&nbsp;the&nbsp;same&nbsp;parameters&nbsp;in&nbsp;the&nbsp;extractor&nbsp;I&nbsp;still&nbsp;see&nbsp;the&nbsp;issues&nbsp;with&nbsp;zooming.&nbsp;&nbsp;Does&nbsp;the&nbsp;4326&nbsp;in&nbsp;the&nbsp;file&nbsp;name&nbsp;indicate&nbsp;that&nbsp;the&nbsp;full&nbsp;map&nbsp;data&nbsp;is&nbsp;based&nbsp;on&nbsp;epsg&nbsp;4326&nbsp;instead&nbsp;of&nbsp;3857?&nbsp;&nbsp;It&nbsp;does&nbsp;appear&nbsp;to&nbsp;actually&nbsp;be&nbsp;based&nbsp;on&nbsp;3857&nbsp;since&nbsp;I’m&nbsp;able&nbsp;to&nbsp;get&nbsp;the&nbsp;full&nbsp;map&nbsp;data&nbsp;working&nbsp;with&nbsp;this&nbsp;code:&nbsp;  
  
  
  
`proj4 = new Proj4Projection(Proj4Projection.GetEpsgParametersString(3857), Proj4Projection.GetDecimalDegreesParametersString());`  
  
  
  
  
  
I&nbsp;assume&nbsp;I&nbsp;should&nbsp;be&nbsp;able&nbsp;to&nbsp;perform&nbsp;the&nbsp;same&nbsp;extraction&nbsp;on&nbsp;the&nbsp;full&nbsp;map&nbsp;as&nbsp;I&nbsp;did&nbsp;on&nbsp;the&nbsp;Las&nbsp;Vegas&nbsp;sample&nbsp;and&nbsp;achieve&nbsp;the&nbsp;same&nbsp;result.&nbsp;&nbsp;So,&nbsp;the&nbsp;short&nbsp;version&nbsp;of&nbsp;all&nbsp;this&nbsp;is&nbsp;that&nbsp;I&nbsp;can&nbsp;extract&nbsp;good&nbsp;data&nbsp;from&nbsp;the&nbsp;Las&nbsp;Vegas&nbsp;sammple&nbsp;but&nbsp;can’t&nbsp;do&nbsp;the&nbsp;same&nbsp;from&nbsp;the&nbsp;full&nbsp;map.&nbsp;&nbsp;Either&nbsp;my&nbsp;extract&nbsp;is&nbsp;bad&nbsp;or&nbsp;my&nbsp;projections&nbsp;aren’t&nbsp;right.&nbsp;  
  
  
  
Here’s&nbsp;the&nbsp;code&nbsp;from&nbsp;the&nbsp;OSM&nbsp;World&nbsp;Map&nbsp;Kit&nbsp;SDK&nbsp;Sample&nbsp;(slightly&nbsp;modified&nbsp;for&nbsp;my&nbsp;data):&nbsp;  
  
  
  
[code]  
  
private&nbsp;void&nbsp;wpfMap1\_Loaded(object&nbsp;sender,&nbsp;RoutedEventArgs&nbsp;e)  
  
{  
  
&nbsp;&nbsp;string&nbsp;s&nbsp;=&nbsp;ConfigurationManager.AppSettings[“SqliteConnectionString”];  
  
&nbsp;&nbsp;string&nbsp;sqliteConnectionString&nbsp;=&nbsp;“Data&nbsp;Source=E:\Test.sqlite;Version=3;Read&nbsp;Only=True;”;[//ConfigurationManager.AppSettings](https://ConfigurationManager.AppSettings)[“SqliteConnectionString”];  
  
&nbsp;&nbsp;string&nbsp;sqliteFilePath&nbsp;=&nbsp;sqliteConnectionString.Substring(sqliteConnectionString.IndexOf(’=’)&nbsp;+&nbsp;1,&nbsp;sqliteConnectionString.IndexOf(’;’)&nbsp;-&nbsp;sqliteConnectionString.IndexOf(’=’)&nbsp;-&nbsp;1);  
  
&nbsp;&nbsp;if&nbsp;(proj4&nbsp;==&nbsp;null)  
  
&nbsp;&nbsp;{  
  
&nbsp;&nbsp;&nbsp;&nbsp;proj4&nbsp;=&nbsp;new&nbsp;Proj4Projection(ManagedProj4Projection.GetEpsgParametersString(3857),&nbsp;ManagedProj4Projection.GetEpsgParametersString(4326));  
  
&nbsp;&nbsp;&nbsp;&nbsp;proj4.Open();  
  
&nbsp;&nbsp;}  
  
&nbsp;&nbsp;wpfMap1.MapUnit&nbsp;=&nbsp;GeographyUnit.Meter;  
  
&nbsp;&nbsp;LayerOverlay&nbsp;overlay&nbsp;=&nbsp;new&nbsp;LayerOverlay();  
  
&nbsp;&nbsp;overlay.TileType&nbsp;=&nbsp;TileType.SingleTile;  
  
&nbsp;&nbsp;wpfMap1.Overlays.Add(overlay);  
  
&nbsp;&nbsp;OsmWorldMapKitLayer&nbsp;osmWorldMapKitLayer&nbsp;=&nbsp;new&nbsp;OsmWorldMapKitLayer(sqliteConnectionString,&nbsp;OsmWorldMapKitDatabaseType.Sqlite);  
  
&nbsp;&nbsp;overlay.Layers.Add(osmWorldMapKitLayer);  
  
&nbsp;&nbsp;osmWorldMapKitLayer.Open();  
  
&nbsp;&nbsp;wpfMap1.CurrentExtent&nbsp;=&nbsp;osmWorldMapKitLayer.Layers[“osm\_road\_linestring”].GetBoundingBox();  
  
&nbsp;&nbsp;osmWorldMapKitLayer.Close();  
wpfMap1.Refresh();  
  
}  
  
  
  
  
This&nbsp;code&nbsp;works&nbsp;fine&nbsp;for&nbsp;the&nbsp;Las&nbsp;Vegas&nbsp;extraction&nbsp;but&nbsp;not&nbsp;for&nbsp;the&nbsp;full&nbsp;map&nbsp;extraction.

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**Author:** ![Johnny](https://community.thinkgeo.com/user_avatar/community.thinkgeo.com/johnny/32/19044_2.png) [@Johnny](https://community.thinkgeo.com/u/Johnny)\
**Post date:** [February 22, 2015, 10:05am UTC](https://community.thinkgeo.com/t/world-map-kit-extractor-output/7468/7 "2015-02-22T10:05:07Z")

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Hi&nbsp;Neil,&nbsp;  
&nbsp;&nbsp;  
&nbsp;Sorry&nbsp;that&nbsp;I’m&nbsp;out&nbsp;of&nbsp;office&nbsp;these&nbsp;days,&nbsp;thus&nbsp;I&nbsp;need&nbsp;to&nbsp;download&nbsp;the&nbsp;OSM&nbsp;data&nbsp;from&nbsp;the&nbsp;company&nbsp;server,&nbsp;seems&nbsp;like&nbsp;it’s&nbsp;too&nbsp;big&nbsp;and&nbsp;may&nbsp;take&nbsp;a&nbsp;bit&nbsp;long&nbsp;time.&nbsp;If&nbsp;the&nbsp;downloading&nbsp;is&nbsp;completed,&nbsp;I&nbsp;will&nbsp;check&nbsp;it&nbsp;as&nbsp;soon&nbsp;as&nbsp;possible.&nbsp;Also&nbsp;you&nbsp;can&nbsp;send&nbsp;a&nbsp;quick&nbsp;question&nbsp;to&nbsp;[support@thinkgeo.com](mailto:support@thinkgeo.com),&nbsp;I&nbsp;guess&nbsp;they&nbsp;will&nbsp;give&nbsp;you&nbsp;a&nbsp;reply&nbsp;in&nbsp;time.&nbsp;  
&nbsp;&nbsp;  
&nbsp;Thanks,&nbsp;  
&nbsp;Johnny

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**Author:** ![Troy](https://community.thinkgeo.com/letter_avatar_proxy/v4/letter/t/85f322/32.png) [@Troy](https://community.thinkgeo.com/u/Troy)\
**Post date:** [February 25, 2015, 11:36pm UTC](https://community.thinkgeo.com/t/world-map-kit-extractor-output/7468/8 "2015-02-25T23:36:38Z")

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Hi&nbsp;Neil,  
  
  
We&nbsp;fixed&nbsp;a&nbsp;bug&nbsp;on&nbsp;WorldMapKit&nbsp;Extractor&nbsp;when&nbsp;the&nbsp;projection&nbsp;is&nbsp;4326&nbsp;and&nbsp;we&nbsp;uploaded&nbsp;it&nbsp;in&nbsp;our&nbsp;wiki&nbsp;sample,&nbsp;would&nbsp;you&nbsp;please&nbsp;get&nbsp;the&nbsp;latest&nbsp;in&nbsp;product&nbsp;center&nbsp;code&nbsp;samples&nbsp;or&nbsp;download&nbsp;it&nbsp;directly&nbsp;from&nbsp;[wiki.thinkgeo.com/wiki/File:…141213.zip](http://wiki.thinkgeo.com/wiki/File:World_Map_Kit_SDK_EditionSample_OsmWorldMapKitExtractor_CS_141213.zip)  
  
  
  
Please&nbsp;let&nbsp;us&nbsp;know&nbsp;if&nbsp;the&nbsp;issue&nbsp;persists.  
  
Thanks,  
  
Troy