# Isochrone does not contain start point

**URL:** <https://ask.openrouteservice.org/t/isochrone-does-not-contain-start-point/2388>\
**Category:** isochrones\
**Created:** [December 24, 2020, 2:12pm UTC](https://ask.openrouteservice.org/t/isochrone-does-not-contain-start-point/2388 "2020-12-24T14:12:40Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![alberto-santini](https://ask.openrouteservice.org/letter_avatar_proxy/v4/letter/a/bbce88/32.png) [@alberto-santini](https://ask.openrouteservice.org/u/alberto-santini)\
**Post date:** [December 24, 2020, 2:12pm UTC](https://ask.openrouteservice.org/t/isochrone-does-not-contain-start-point/2388/1 "2020-12-24T14:12:40Z")

</div>

Maybe I am doing something obviously wrong, but my 15-minutes walking isochrone seems to not contain its starting point:

```
curl -X POST \
  'https://api.openrouteservice.org/v2/isochrones/foot-walking' \
  -H 'Content-Type: application/json; charset=utf-8' \
  -H 'Accept: application/json, application/geo+json, application/gpx+xml, img/png; charset=utf-8' \
  -H 'Authorization: xxx' \
  -d '{"locations":[[41.405054815522696, 2.1568371206482384]], "interval": 900, "range": [900,900]}'

```

 ![Screenshot_2020-12-24_15-11-37](https://ask.openrouteservice.org/uploads/default/original/1X/08b815ed112d5f9c2e58eae09510b86ce1ec79b6.jpeg)

The starting point is indicated by a Marker, and the isochrone is in blue.  
Thanks in advance for any clarification!

---

<div class="post-metadata">

**Author:** ![alberto-santini](https://ask.openrouteservice.org/letter_avatar_proxy/v4/letter/a/bbce88/32.png) [@alberto-santini](https://ask.openrouteservice.org/u/alberto-santini)\
**Post date:** [December 24, 2020, 2:25pm UTC](https://ask.openrouteservice.org/t/isochrone-does-not-contain-start-point/2388/2 "2020-12-24T14:25:32Z")

</div>

This might actually be a problem with how Folium is plotting the isochrones polygon, now that I think about it. However, it seems unlikely to be a projection problem, because it’s plotting the Marker correctly.

---

<div class="post-metadata">

**Author:** ![amandus](https://ask.openrouteservice.org/user_avatar/ask.openrouteservice.org/amandus/32/669_2.png) [@amandus](https://ask.openrouteservice.org/u/amandus)\
**Post date:** [December 28, 2020, 2:10pm UTC](https://ask.openrouteservice.org/t/isochrone-does-not-contain-start-point/2388/3 "2020-12-28T14:10:50Z")

</div>

Hi @alberto-santini,

You are currently searching an isochrone in somalia. You have to pass long,lat coordinates.  
I guess folium if folium is taking lat,long coordinates you need to swap before searching and again before rendering the response.

Best regards