GPS with customized routes

Discuss
#1

I’m new to programming. I have a doubt regarding the creation of a GPS with customized routes for example routes on dirt roads. there would be some way for me to draw this route and the gps follow as per pre-defined drawing. I would like to know where I start, I was looking at the geojson.io website, which already gives me a drawing of the route, but how to make this co-relationship between a manual route x gps operation

How to call latitudes and longitudes from aitable and set them on "add marker"s lat-lng point
#2

You want something like polylines? or what? i didn’t understand you well.

i didn’t understand this.What do you mean by a gps.The location sensor?

You can draw this lines on google maps using the json code provided with this block:

blocks (10)
blocks (10)800×128 8.02 KB

Or without using json text.You can use list of list of pairs each pair contains latitude and longitude.

#3

This ?
One simple test.

Screenshot_20200420-174303
Screenshot_20200420-174303720×1512 229 KB

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#4

exactly, but on unpaved roads where there are no predefined paths

image

#5

You can define your routes your self be making a list of pairs of the points like ((25.87678 23.890789)(87.8789 ))
Then using this block to display on map:
component_method
Here is an example:
blocks (11)
Or using json:

blocks (12)
blocks (12)960×128 9.76 KB

#6

I understood.
but how a gps can understand and follow this polyline. need some API?

image
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#7

What do you mean with gps? Can you post me the name of the component or extension that makes this?You mean the marker?

#8

a navigator that show me the time the distance speed limit . Sorry maybe I couldn’t express myself :slight_smile:

#9

You use the navigation component?

You mean the estimated time to pass this route.

You mean the max speed you can drive in this route?

#10

kodular have some component for this or need to import some extension or api to
follow the polyline

yes a way to calculate this

my question is google maps can interpret this polyline as a navigation system, what is needed? there is something in the kodular for that

image

#11

I think now i understood you.You need to create an api key here:
https://openrouteservice.org/ then use the navigation component to get the directions between two points.The first point and the last point.You will get the distance and time as well.

#12

You mean, use the API, right? This image I posted is of this API. Did the new version of Kodular create this component or not?

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#13

Sorry :sweat_smile: i meant create an api key.I will go and edit my first post.

1 Like
#14

GPS in your app ?

1 Like
#15

I drew a path in geojson.io I copied all the text but when I run an error.

image
image1366×768 245 KB

this error
image

what can be wrong?

#16

Shouldn’t you just take the latitude and longitude pairs of numbers?

Screenshot_20200925-152333
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#17

That error happens when using get points from json or adding polyline.
P.S: the meaning of the error, that you’ve entered a string , in a place it should be a number.

#18

I am also looking for this. Stil i nit solve this.

#19

Each time you will search here. Their have any api for this.

#20

I tried to put

[[-48.329758644104004,-21.39739875595992],[-48.34134578704834,-21.39693924638317]]

this information without space between the numbers, just to give me only a line
but give an error:
" Attempt to invoke virtual method ‘com.google.android.gms.maps.model.Polyline com.google.android.gms.maps.GoogleMap.addPolyline(com.google.android.gms.maps.model.PolylineOptions)’ on a null object reference
Note: You will not see another error reported for 5 seconds."

if I replace “[” with “(”
((-48.329758644104004,-21.39739875595992),(-48.34134578704834,-21.39693924638317))

gave another error :

The operation AddPolyline cannot accept the arguments: , [nothing], [20], [-81913]
Note: You will not see another error reported for 5 seconds.