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0

My preference is nationalmap.gov, they even have a new bulk download tool that simplifies the process of downloading all the tiles quite a bit.


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I personally prefer http://datagateway.nrcs.usda.gov/ however the max resolution you can download at one time is statewide and I would assume those will be quite large but it is organized well.


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My favorite source of DEM data is at viewfinderpanoramas.org It has STRM data that has been massaged in various ways. I think that should be good enough resolution for what you require.


1

Try Hec-ras, there is an extension to use in ArcGis.


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It sounds like what you've done (reasonably enough) has provided you with raw Openstreetmap data, rather than the map pictures which you're familiar with looking at. What you have is a set of points and lines, each with data attached to them - so for example a line might represent a motorway, a river, or a boundary (etc). This is a good thing - if what you ...


2

Is it possible to use an annotation feature class for the 'DRAFT' text, manually editing the text, and setting the transparency for the layer at 50%? This allows you to see the features under the text, and it is not necessary to export the document for use in another program.


-3

Simple website maps for clickable navigation are here: clickable maps....also as Joomla and WordPress plugins.


2

The scale is not a constant on map projections. For local map it is not an issue because the change in scale is so small that it is below the precision of the drawing, but for World map there can be huge difference when you change latitude (obviously, in a Mercator projection, the same distance near the pole is not equivalent to the distance near the ...


2

Jens Rasmussen, one of the inventors of Google Maps, a Danish computer programmer is credited with the creation of what is officially known as the map pin or pushpin. See this New York Times article which is referenced in his official wikipedia page


1

If you are going to be repeating this process or attempting to model/script it...then using a GP tool such as the Union tool as @MAJ742 suggests is certainly the best option and your best answer. If I understand your question correctly and this is a one time thing or you are just playing around with your data...you can try the Clip option on the editing ...


4

Using ArcGIS I would use the union tool. This will give you a layer that combines both the 'purple' and 'green' buffers into a single layer. From this output you can select just the 'green' areas which don't have cover 'purple' areas. You can either do this by looking in the attribute table and select the areas where the purple FID is -1. Alternatively ...


2

UPDATE: Your problem seems to be with your data. Here is a snippet of your file: }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 585951.8, 181704.9 ], [ 576293.9, 181299.8 ], If I'm not mistaken, those ...


1

Looking at the examples provided with the ?iconlabels function, the author uses the column landuse from the meuse dataset. That column is from class factor. So I tried to convert your column cluster from class integer to class factor and it worked. X = read.table(text="code,cluster,name,longt,latit 101,1,A,-89.6171,35.24992 ...


0

OSM relations are stored in the Postgis database with negative id to distinguish them from ways that could have the same id. So you have to put that negative osm_id value into your style definition. Apart from that, you could as well look into the polygon table. Relations of type boundary or multipolygon that form a closed line should land there (unless the ...



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