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Cartesian3.distance - returning NaN?


Cartesian3.distance - returning NaN?

By : Light Kuragari
Date : November 19 2020, 03:01 PM
I hope this helps you . So, per our discussion we have discovered:
peaks is an array of Cesium.Entitys.
code :
peakPosition = peaks[i].position;
peakPosition = peaks[i].position.getValue(new Cesium.JulianDate());


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DbGeography.Distance() returning incorrect distance

DbGeography.Distance() returning incorrect distance


By : dollop
Date : March 29 2020, 07:55 AM
help you fix your problem You're not declaring the element in WKT in the right order. WKT should be in your case:
code :
POINT(10.2050 59.7378)
POINT(LONGITUDE LATITUDE)
Cesium Cartesian3 creating instance and getting into it's method

Cesium Cartesian3 creating instance and getting into it's method


By : Tamer
Date : March 29 2020, 07:55 AM
I wish this helpful for you I got it.. this is incredibly silly question!
Static means I just access it directly from
code :
Cesium.Cartesian3.add(first_cartesian3, second_cartesian3)
Django's Distance function not returning a Distance object

Django's Distance function not returning a Distance object


By : samba siva
Date : March 29 2020, 07:55 AM
hop of those help? Those two aren't that closely related to each other. Docs do indeed say that it "returns" Distance object, but there is an extra step:
django.contrib.gis.db.models.functions.Distance is a database function, it takes two expressions (that may include database field names) and returns a Func object that can be used as a part of a query.
code :
In [1]: from django.contrib.gis.measure import Distance

In [2]: d1 = Distance(mi=10)

In [3]: d2 = Distance(km=15)

In [4]: d1 > d2
Out[4]: True

In [5]: d1 + d2
Out[5]: Distance(mi=19.32056788356001)

In [6]: _.km
Out[6]: 31.09344
class MyModel(models.Model):
    coordinates = models.PointField()

    class Meta:
        db_table = 'mymodel'

    def __str__(self):
        return f"{self.coordinates} {getattr(self, 'distance', '')}"
In [7]: from gisexperiments.models import MyModel

In [8]: from django.contrib.gis.geos import Point

In [10]: some_places = MyModel.objects.bulk_create(
    ...:     MyModel(coordinates=Point(i, i, srid=4326)) for i in range(1, 5)
    ...: )

In [11]: MyModel.objects.all()
Out[11]: <QuerySet [<MyModel: SRID=4326;POINT (1 1) >, <MyModel: SRID=4326;POINT (2 2) >, <MyModel: SRID=4326;POINT (3 3) >, <MyModel: SRID=4326;POINT (4 4) >]>

In [12]: str(MyModel.objects.all().query)
Out[12]: 'SELECT "mymodel"."id", "mymodel"."coordinates" FROM "mymodel"'
In [14]: from django.contrib.gis.db.models.functions import Distance

In [15]: from django.contrib.gis.measure import D  # an alias

In [16]: q = MyModel.objects.annotate(dist=Distance('coordinates', origin))

In [17]: list(q)
Out[17]:
[<MyModel: SRID=4326;POINT (1 1) 157249.597768505 m>,
 <MyModel: SRID=4326;POINT (2 2) 314475.238061007 m>,
 <MyModel: SRID=4326;POINT (3 3) 471652.937856715 m>,
 <MyModel: SRID=4326;POINT (4 4) 628758.663018087 m>]

In [18]: str(q.query)
Out[18]: 'SELECT "mymodel"."id", "mymodel"."coordinates", ST_distance_sphere("mymodel"."coordinates", ST_GeomFromEWKB(\'\\001\\001\\000\\000 \\346\\020\\000\\000\\000\\000\\000\\000\\000\\000\\000\\000\\000\\000\\000\\000\\000\\000\\000\\000\'::bytea)) AS "distance" FROM "mymodel"'
In [19]: q = q.filter(distance__lt=D(km=400).m)

In [20]: list(q)
Out[20]:
[<MyModel: SRID=4326;POINT (1 1) 157249.597768505 m>,
 <MyModel: SRID=4326;POINT (2 2) 314475.238061007 m>]
Distance matrix is not returning distance for large data

Distance matrix is not returning distance for large data


By : MJ123
Date : March 29 2020, 07:55 AM
will help you There is a limit to the number of origins times destinations that results can be returned for:
from the documentation
Trying to get distance data from distance matrix api always returning NULL

Trying to get distance data from distance matrix api always returning NULL


By : Naresh
Date : March 29 2020, 07:55 AM
I hope this helps you . I see that you have some information missing, F.E you don't have the correct annotation over the class. Here's a nice guide. https://proandroiddev.com/getting-started-using-moshi-for-json-parsing-with-kotlin-5a460bf3935a
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