i have my current lat,lon
and i want to make Bounding Box Search in GAE data store to get every nearest location to my current point .
i want the bounding box to be 1 km around my point
how can i do this ??
Check this example: http://code.google.com/appengine/articles/geosearch.html
It is in Python, but the discussion of the associated problems and ways to implement precomputed boxes could be helpful to you.
Related
When I perform a fuzzy search using the Azure Maps REST API, the results are not limited to the bounding box I specify. This makes searching for partial addresses much less useful, since many/most/all of the results are from other states and the relevant results from the specified state are not included in the first 10-20 results.
For example, if I search for "123 Main" and specify a bounding box that covers the state of Louisiana, I should get a half dozen or so point addresses in the results, and all the results should be constrained to the bounding box. (There may be a few results from the edges of surrounding states since the bounding box is a rectangle.) Instead, I get results from Connecticut, Ohio, Massachusetts, and so on that are clearly outside the bounding box.
The documentation clearly states, "You can use the btmRight and topleft parameters to set the bounding box. These parameters restrict the search to a specific area on the map."
https://learn.microsoft.com/en-us/azure/azure-maps/how-to-use-best-practices-for-search#limit-search-results
https://learn.microsoft.com/en-us/rest/api/maps/search/get-search-fuzzy
The test query I am using is:
https://atlas.microsoft.com/search/fuzzy/json?subscription-key=[SUBSCRIPTION_KEY]&api-version=1.0&query=123+Main&countrySet=US&idxSet=Addr,PAD,POI,XStr&lat=30.3618&limit=20&lon=-91.1067&typeahead=true&topLeft=33.019457,-94.043147&btmRight=28.928609,-88.817017
Am I doing something wrong? How do I limit the search results to the bounding box?
The bounding box is meant to help influence the relevance of the results and is not a filter.
I'd like a user to be able to draw a polygon using the Azure Maps Drawing Manager and have the ability to move a point of the polygon to near one of another polygon's points and have the dragged point snap to the same location such that the resulting 2 points would be the same.
I know there is snap capability with a grid but don't see a sample for this behaviour?
The ultimate goal is to prevent polygon overlaps, assuming the intersecting shared line of adjoining shapes is excluded from determination of which polygon a point resides within.
I can allow a user to manually draw and get as close as possible of course, and provide some assertion to confirm no polygons overlap but would additionally like a nice snap-to-point experience if possible.
You can find hundreds of samples for Azure Maps here: https://samples.azuremaps.com/
As you noted, the snapping grid is likely the best place to start in your scenario. Here are some specific samples of this:
https://samples.azuremaps.com/?sample=use-a-snapping-grid
https://samples.azuremaps.com/?sample=snap-grid-options
The following sample is an example of a custom snapping scenario where the routing service is used to snap a drawn line to a route (the route part can be swapped out for custom logic): https://samples.azuremaps.com/?sample=snap-drawn-line-to-roads
I made an app that detects objects occupying the smartphone camera and now I want to draw the bounding boxes.
I've seen more than one way to do it and so far I'm planning to use the react-native-canvas library or to create a button in form of a bounding box located in the corresponding coordinates, but I'm wondering what the least resource-intensive solution would be.
This is because object detection already takes up a lot of resources and now I am going to add a function that draws bounding boxes several times per second, so I will surely have to lower the detections per second, but the ideal would be to lower them as little as possible. This is one of those situations where a few fractions of a second will be significant in performance.
I'm pretty new to react native so I need some help finding the optimal solution.
For example plotting buttons without installing an external library and that might work faster, I'm not sure if that makes sense.
Hopefully somebody can point me in the right direction.
Thanks.
I create my layers from geoJson, which has specified adress among other things.
I understand that grouping is done based on distance between them and current zoom to map. I want to achieve that markers on one street stay grouped(clustered) even on max zoom and implement layer.spiderify on click (which I have by now).
I searched pages and examples Im quest for finding the answer for few days and now I turn on stack for a hunt.
i need a help
i have a shape file that continue 3716 polygon record and want to draw this shape file where some of those polygons need to have a specified color
OR WANT a search technique to search this map for a point (lat-long) and get it's belong polygon but not by searching all polygons
i tries all, OpenJump-Source code, GeoTools,....
In GeoTools you can follow the Style tutorial to show you how to display your shapefile. There is no way to carry out a point in polygon search without at least examining the bounding box of each polygon but the GeoTools Query Lab will talk you through the basics of setting up a query (and if your shapefile has a spatial index then it will be quick enough).