I just stumbled on this after struggling with the error: "GeoJSON
coordinates must be in an array" and I finally solved my issue. Attention
to detail is always key. It doesn't seem to make logical sense to me, but
you have to use a 3d slice, not a 2d slice. This is probably obvious for
people who write GIS queries or can look at documentation one time and
catch every detail, but it wasn't obvious for me.
So the way I fixed it was to take my polygon: [][]float64 and insert it
into a slice of interface:
// box is my [][]float64
newBox := []interface{}{box}
that did the trick.
On Wednesday, February 3, 2016 at 6:44:44 AM UTC-5, Gustavo Niemeyer wrote:
>
>
> Same way you'd do it in Go elsewhere:
>
> coords := [][][]int{{{0, 0}, {3, 6}, {6, 1}, {0, 0}}}
>
>
>
> On Tue, Feb 2, 2016 at 8:56 PM, CMC <[email protected] <javascript:>>
> wrote:
>
>> Hi there, sorry if I make mistakes but English is not my native language
>>
>> I have 4 slices as float64, do you know how I have to form "coordinates"
>> field??
>>
>> thanks
>>
>> db.places.find(
>> {
>> loc: {
>> $geoWithin: {
>> $geometry: {
>> type : "Polygon" ,
>> coordinates: [ [ [ 0, 0 ], [ 3, 6 ], [ 6, 1 ], [ 0, 0 ] ] ]
>> }
>> }
>> }
>> }
>> }
>>
>> --
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>
>
>
> --
>
> gustavo @ http://niemeyer.net
>
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