How to use @turf/along - 10 common examples

To help you get started, we’ve selected a few @turf/along examples, based on popular ways it is used in public projects.

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github FreemapSlovakia / freemap-v3-react / src / processors / elevationChartProcessor.ts View on Github external
async function resolveElevationProfilePointsViaApi(
  getState,
  trackGeojson,
  dispatch: Dispatch,
) {
  const totalDistanceInKm = turfLength(trackGeojson);
  const delta = Math.min(0.1, totalDistanceInKm / (window.innerWidth / 2));
  const elevationProfilePoints: {
    lat: number;
    lon: number;
    ele: number;
    distance: number;
  }[] = [];

  for (let dist = 0; dist <= totalDistanceInKm; dist += delta) {
    const [lon, lat] = getCoord(turfAlong(trackGeojson, dist));
    elevationProfilePoints.push({
      lat,
      lon,
      distance: dist * 1000,
      ele: Number.NaN, // will be filled later
    });
  }

  const { data } = await httpRequest({
    getState,
    method: 'POST',
    url: '/geotools/elevation',
    data: elevationProfilePoints.map(({ lat, lon }) => [lat, lon]),
    expectedStatus: 200,
    cancelActions: [
      elevationChartSetTrackGeojson,
github ibi-group / datatools-ui / lib / editor / selectors / index.js View on Github external
export function sliceAtPoint (
  line: GeoJsonLinestring,
  beginPoint: GeoJsonPoint,
  alongPoint: ?GeoJsonPoint = null,
  lengthInMeters: number = 0
) {
  if (!alongPoint && !lengthInMeters && lengthInMeters !== 0) {
    throw new Error(
      'Must provide alongPoint argument or positive number for lengthInMeters'
    )
  } else if (!alongPoint) {
    alongPoint = along(line, lengthInMeters, {units: 'meters'})
  }
  const lineSegment: GeoJsonLinestring = lineSlice(beginPoint, alongPoint, line)

  // measure line segment
  const distance: number = lineDistance(lineSegment, 'meters')
  const index = lineSegment.geometry.coordinates.length
  return {distance, index, alongPoint, lineSegment}
}
github ibi-group / datatools-ui / lib / editor / actions / map / stopStrategies.js View on Github external
// skip vertex if incidentStreets tags highway !== primary or secondary
            // else if (toVertex) {
            //
            // }

            // modify location according to distanceFromIntersection and before/after
            const start = afterIntersection
              ? constructPoint(feature.geometry.coordinates[feature.geometry.coordinates.length - 1])
              : constructPoint(shape.coordinates[0])
            const end = afterIntersection
              ? constructPoint(shape.coordinates[shape.coordinates.length - 1])
              : constructPoint(feature.geometry.coordinates[feature.geometry.coordinates.length - 1])
            // TODO-lineSlice: refactor below code to use only relevant section of shape with lineSlice
            // the current code may have undesired results in cases where the shape overlaps itself
            const lineFromPoint = lineSlice(start, end, {type: 'Feature', geometry: shape})
            const stopLocation = along(lineFromPoint, distanceFromIntersection / 1000, {units: 'kilometers'})
            const latlng = ll.toLeaflet(stopLocation.geometry.coordinates)
            // const {afterIntersection, intersectionStep, distanceFromIntersection} = getState().editor.editSettings.present
            return dispatch(addStopAtPoint(latlng, false, patternStops.length, activePattern))
          }))
            .then(stops => {
github noncomputable / AgentMaps / src / buildings.js View on Github external
function getUnitAnchors(street_feature, bounding_box, unit_options) {
	let unit_anchors = [],
	unit_length = unit_options.length / 1000, //Kilometers.
	unit_buffer = unit_options.side_buffer / 1000, //Distance between units, kilometers.
	endpoint = street_feature.geometry.coordinates[street_feature.geometry.coordinates.length - 1],
	start_anchor = along(street_feature, 0),
	end_anchor = along(street_feature, unit_length),
	distance_along = unit_length;

	while (end_anchor.geometry.coordinates != endpoint) {
		//Exclude proposed anchors if they're outside of the bounding box.
		start_coord = L.A.reversedCoordinates(start_anchor.geometry.coordinates), 
		end_coord = L.A.reversedCoordinates(end_anchor.geometry.coordinates);
		if (L.latLngBounds(bounding_box).contains(start_coord) &&
			L.latLngBounds(bounding_box).contains(end_coord)) {
				unit_anchors.push([start_anchor, end_anchor]);
		}

		//Find next pair of anchors.
		start_anchor = along(street_feature, distance_along + unit_buffer);
		end_anchor = along(street_feature, distance_along + unit_buffer + unit_length);
github noncomputable / AgentMaps / src / buildings.js View on Github external
endpoint = street_feature.geometry.coordinates[street_feature.geometry.coordinates.length - 1],
	start_anchor = along(street_feature, 0),
	end_anchor = along(street_feature, unit_length),
	distance_along = unit_length;

	while (end_anchor.geometry.coordinates != endpoint) {
		//Exclude proposed anchors if they're outside of the bounding box.
		start_coord = L.A.reversedCoordinates(start_anchor.geometry.coordinates), 
		end_coord = L.A.reversedCoordinates(end_anchor.geometry.coordinates);
		if (L.latLngBounds(bounding_box).contains(start_coord) &&
			L.latLngBounds(bounding_box).contains(end_coord)) {
				unit_anchors.push([start_anchor, end_anchor]);
		}

		//Find next pair of anchors.
		start_anchor = along(street_feature, distance_along + unit_buffer);
		end_anchor = along(street_feature, distance_along + unit_buffer + unit_length);
		
		distance_along += unit_buffer + unit_length
	}

	return unit_anchors;
}
github noncomputable / AgentMaps / tool / browserlessbuildings.js View on Github external
start_anchor = along(street_feature, 0),
	end_anchor = along(street_feature, unit_length),
	distance_along = unit_length;
	
	while (end_anchor.geometry.coordinates != endpoint) {
		//Exclude proposed anchors if they're outside of the bounding box.
		start_coord = L.A.reversedCoordinates(start_anchor.geometry.coordinates), 
		end_coord = L.A.reversedCoordinates(end_anchor.geometry.coordinates);
		
		if (L.latLngBounds(bounding_box).contains(start_coord) &&
			L.latLngBounds(bounding_box).contains(end_coord)) {
				unit_anchors.push([start_anchor, end_anchor]);
		}

		//Find next pair of anchors.
		start_anchor = along(street_feature, distance_along + unit_buffer);
		end_anchor = along(street_feature, distance_along + unit_buffer + unit_length);
		
		distance_along += unit_buffer + unit_length;
	}

	return unit_anchors;
}
github noncomputable / AgentMaps / tool / browserlessbuildings.js View on Github external
end_anchor = along(street_feature, unit_length),
	distance_along = unit_length;
	
	while (end_anchor.geometry.coordinates != endpoint) {
		//Exclude proposed anchors if they're outside of the bounding box.
		start_coord = L.A.reversedCoordinates(start_anchor.geometry.coordinates), 
		end_coord = L.A.reversedCoordinates(end_anchor.geometry.coordinates);
		
		if (L.latLngBounds(bounding_box).contains(start_coord) &&
			L.latLngBounds(bounding_box).contains(end_coord)) {
				unit_anchors.push([start_anchor, end_anchor]);
		}

		//Find next pair of anchors.
		start_anchor = along(street_feature, distance_along + unit_buffer);
		end_anchor = along(street_feature, distance_along + unit_buffer + unit_length);
		
		distance_along += unit_buffer + unit_length;
	}

	return unit_anchors;
}
github noncomputable / AgentMaps / src / buildings.js View on Github external
function getUnitAnchors(street_feature, bounding_box, unit_options) {
	let unit_anchors = [],
	unit_length = unit_options.length / 1000, //Kilometers.
	unit_buffer = unit_options.side_buffer / 1000, //Distance between units, kilometers.
	endpoint = street_feature.geometry.coordinates[street_feature.geometry.coordinates.length - 1],
	start_anchor = along(street_feature, 0),
	end_anchor = along(street_feature, unit_length),
	distance_along = unit_length;

	while (end_anchor.geometry.coordinates != endpoint) {
		//Exclude proposed anchors if they're outside of the bounding box.
		start_coord = L.A.reversedCoordinates(start_anchor.geometry.coordinates), 
		end_coord = L.A.reversedCoordinates(end_anchor.geometry.coordinates);
		if (L.latLngBounds(bounding_box).contains(start_coord) &&
			L.latLngBounds(bounding_box).contains(end_coord)) {
				unit_anchors.push([start_anchor, end_anchor]);
		}

		//Find next pair of anchors.
		start_anchor = along(street_feature, distance_along + unit_buffer);
		end_anchor = along(street_feature, distance_along + unit_buffer + unit_length);
		
		distance_along += unit_buffer + unit_length
github noncomputable / AgentMaps / tool / browserlessbuildings.js View on Github external
function getUnitAnchors(street_feature, bounding_box, unit_options) {
	let unit_anchors = [],
	unit_length = unit_options.length / 1000, //Kilometers.
	unit_buffer = unit_options.side_buffer / 1000, //Distance between units, kilometers.
	endpoint = street_feature.geometry.coordinates[street_feature.geometry.coordinates.length - 1],
	start_anchor = along(street_feature, 0),
	end_anchor = along(street_feature, unit_length),
	distance_along = unit_length;
	
	while (end_anchor.geometry.coordinates != endpoint) {
		//Exclude proposed anchors if they're outside of the bounding box.
		start_coord = L.A.reversedCoordinates(start_anchor.geometry.coordinates), 
		end_coord = L.A.reversedCoordinates(end_anchor.geometry.coordinates);
		
		if (L.latLngBounds(bounding_box).contains(start_coord) &&
			L.latLngBounds(bounding_box).contains(end_coord)) {
				unit_anchors.push([start_anchor, end_anchor]);
		}

		//Find next pair of anchors.
		start_anchor = along(street_feature, distance_along + unit_buffer);
		end_anchor = along(street_feature, distance_along + unit_buffer + unit_length);
github noncomputable / AgentMaps / src / buildings.js View on Github external
start_anchor = along(street_feature, 0),
	end_anchor = along(street_feature, unit_length),
	distance_along = unit_length;

	while (end_anchor.geometry.coordinates != endpoint) {
		//Exclude proposed anchors if they're outside of the bounding box.
		start_coord = L.A.reversedCoordinates(start_anchor.geometry.coordinates), 
		end_coord = L.A.reversedCoordinates(end_anchor.geometry.coordinates);
		if (L.latLngBounds(bounding_box).contains(start_coord) &&
			L.latLngBounds(bounding_box).contains(end_coord)) {
				unit_anchors.push([start_anchor, end_anchor]);
		}

		//Find next pair of anchors.
		start_anchor = along(street_feature, distance_along + unit_buffer);
		end_anchor = along(street_feature, distance_along + unit_buffer + unit_length);
		
		distance_along += unit_buffer + unit_length
	}

	return unit_anchors;
}

@turf/along

turf along module

MIT
Latest version published 3 years ago

Package Health Score

74 / 100
Full package analysis

Popular @turf/along functions