# Point disapears if another point is overlaid

**URL:** <https://mapwindow.discourse.group/t/point-disapears-if-another-point-is-overlaid/381>\
**Category:** Uncategorized\
**Created:** [December 14, 2019, 1:26pm UTC](https://mapwindow.discourse.group/t/point-disapears-if-another-point-is-overlaid/381 "2019-12-14T13:26:46Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Gilles](https://avatars.discourse-cdn.com/v4/letter/g/ce7236/32.png) [@Gilles](https://mapwindow.discourse.group/u/Gilles)\
**Post date:** [December 14, 2019, 1:26pm UTC](https://mapwindow.discourse.group/t/point-disapears-if-another-point-is-overlaid/381/1 "2019-12-14T13:26:46Z")

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Hello,  
I have two points on different layers.  
The first has a green square as symbol and a size of 30 pixel. (bottom layer)  
The second has a red diamond as symbol and a size of 15 pixel. (top layer)

If the two points have the same location (latitude and longitude) or are very close, I see only one point, the red point. The green square doesn’t overfill, although its size is twice as wide as the red point.

Is there a parameter of layer/shapefile/shape or point to not hide overlayed objects ?

Thanks in advance for your help

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**Author:** ![Gilles](https://avatars.discourse-cdn.com/v4/letter/g/ce7236/32.png) [@Gilles](https://mapwindow.discourse.group/u/Gilles)\
**Post date:** [December 24, 2019, 12:32am UTC](https://mapwindow.discourse.group/t/point-disapears-if-another-point-is-overlaid/381/2 "2019-12-24T00:32:19Z")

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The solution is here :  
[Collision mode](https://www.mapwindow.org/documentation/mapwingis4.9/class_shapefile.html#ae0c2b5b354f003d50bca9efbe82ee08e)  
[tkCollisionMode](https://www.mapwindow.org/documentation/mapwingis4.9/_enumerations_8cs.html#a4b9c9db9e529a648a8f805cd11bbcf3a)

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**Author:** ![pmeems](https://yyz2.discourse-cdn.com/free1/user_avatar/mapwindow.discourse.group/pmeems/32/9_2.png) [@pmeems](https://mapwindow.discourse.group/u/pmeems)\
**Post date:** [January 5, 2022, 3:08pm UTC](https://mapwindow.discourse.group/t/point-disapears-if-another-point-is-overlaid/381/3 "2022-01-05T15:08:56Z")

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Closed on January 5, 2022, 3:08pm UTC