# Add / display markers at specific locations / positions (Unfolding map) with processing

**URL:** <https://discourse.processing.org/t/add-display-markers-at-specific-locations-positions-unfolding-map-with-processing/10657>\
**Category:** Libraries\
**Created:** [April 26, 2019, 10:21am UTC](https://discourse.processing.org/t/add-display-markers-at-specific-locations-positions-unfolding-map-with-processing/10657 "2019-04-26T10:21:48Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kkxxbdm](https://avatars.discourse-cdn.com/v4/letter/k/b5a626/32.png) [@kkxxbdm](https://discourse.processing.org/u/kkxxbdm)\
**Post date:** [April 26, 2019, 10:21am UTC](https://discourse.processing.org/t/add-display-markers-at-specific-locations-positions-unfolding-map-with-processing/10657/1 "2019-04-26T10:21:48Z")

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![add_markers_not_working](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/b/b90a8b4a294a428dce1549f597e3205b76828885.jpeg)  
Hi, I was wondering, how to add / display markers at specific locations / positions? I tried a specific example, and it seems that it does not work. Could anyone please let me know what might be wrong in the code?

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**Author:** ![kll](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/kll/32/964_2.png) [@kll](https://discourse.processing.org/u/kll)\
**Post date:** [April 26, 2019, 10:38am UTC](https://discourse.processing.org/t/add-display-markers-at-specific-locations-positions-unfolding-map-with-processing/10657/2 "2019-04-26T10:38:39Z")

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using the example  
Unfolding Maps / MarkerSelectionApp/  
on a Raspberry Pi works.

 ![SNAG-0089](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/8/8bff8fc7b0c7d803a166d7237f63d167f012369d.jpeg)

possibly same problem as with your other question,  
your code use

```auto
size(1000,1000);

```

instead P2D like above mentioned example