Re: [Talk-us] USFS Wilderness data, import with a "lenient transformation?"

2013-02-21 Thread stevea
Gregory Arenius writes: Have you tried using a different program, such as QGIS or ArcGIS, to transform to WGS84 and then translate to OSM? Hello Gregory: Yes, please see my previous reply to John Novak; I am now in the process of something similar using ogr2ogr. Do you have a link you cou

Re: [Talk-us] USFS Wilderness data, import with a "lenient transformation?"

2013-02-21 Thread stevea
John Novak writes: Hi Steve, Have you tried ogr2ogr, going shape to shape with a GCS_North_American_1983 and WGS84 source transform to epsg:900913 or epsg:4326 as a target ? Then you'll at least be in the right coordinate system. Hi John: Yes, I am now examining maybe something like: og

Re: [Talk-us] USFS Wilderness data, import with a "lenient transformation?"

2013-02-21 Thread stevea
An update: after some cursory examination of just the sort I am proposing (USFS data imported from shapefile WITH a "potentially noisy" transformation with superimposed USGS data), I find very high data correlation. The largest errors I am able to see (for the small subset of data I have visu

[Talk-us] USFS Wilderness data, import with a "lenient transformation?"

2013-02-21 Thread stevea
I've been working on an amazing national resource, regional to me, which I greatly enjoy both in real life and mapping in OSM: the Ventana Wilderness (around Big Sur, California) of the Los Padres National Forest (LPNF). I have discovered that Ventana is only the northernmost of ten wildernes