# Erreur de compilation

**URL:** <https://community.freefem.org/t/erreur-de-compilation/2502>\
**Category:** General Discussion\
**Created:** [May 28, 2023, 3:26pm UTC](https://community.freefem.org/t/erreur-de-compilation/2502 "2023-05-28T15:26:28Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![aweni](https://avatars.discourse-cdn.com/v4/letter/a/db5fbb/32.png) [@aweni](https://community.freefem.org/u/aweni)\
**Post date:** [May 28, 2023, 3:26pm UTC](https://community.freefem.org/t/erreur-de-compilation/2502/1 "2023-05-28T15:26:28Z")

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Bonsoir à tous  
Comment corriger cet erreur svp

Merci d’avance

current line = 169  
Exec error : Try to get unset x,y, …  
– number :1  
Exec error : Try to get unset x,y, …  
– number :1  
err code 8 , mpirank 0  
try getConsole C:\Users\ADMIN\Desktop\thÞse\these1.txt  
save log in : ‘C:\Users\ADMIN\Desktop\thÞse\these1.txt.log’  
wait enter ?

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**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\
**Post date:** [May 29, 2023, 7:26am UTC](https://community.freefem.org/t/erreur-de-compilation/2502/2 "2023-05-29T07:26:16Z")

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Generaly in line 169 you have a mistake  
if  
Vh u; // en finite element function

in line 169 you write some thing using variable u but  
but to use u x,y must be set before to get the value of u a point x,y .

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<div class="post-metadata">

**Author:** ![aweni](https://avatars.discourse-cdn.com/v4/letter/a/db5fbb/32.png) [@aweni](https://community.freefem.org/u/aweni)\
**Post date:** [June 5, 2023, 11:14am UTC](https://community.freefem.org/t/erreur-de-compilation/2502/3 "2023-06-05T11:14:24Z")

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i don’t understand well. Please can you explain me in another word

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**Author:** ![aweni](https://avatars.discourse-cdn.com/v4/letter/a/db5fbb/32.png) [@aweni](https://community.freefem.org/u/aweni)\
**Post date:** [June 5, 2023, 11:18am UTC](https://community.freefem.org/t/erreur-de-compilation/2502/4 "2023-06-05T11:18:01Z")

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c’est vrai que j’ai définir des fonctions comme sin (x) et sin(y).  
je ne vois pas comment définir x,y

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<div class="post-metadata">

**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\
**Post date:** [June 6, 2023, 1:04pm UTC](https://community.freefem.org/t/erreur-de-compilation/2502/5 "2023-06-06T13:04:17Z")

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Yes but I need the edp script.

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<div class="post-metadata">

**Author:** ![aweni](https://avatars.discourse-cdn.com/v4/letter/a/db5fbb/32.png) [@aweni](https://community.freefem.org/u/aweni)\
**Post date:** [June 7, 2023, 1:31pm UTC](https://community.freefem.org/t/erreur-de-compilation/2502/6 "2023-06-07T13:31:37Z")

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ok

(Attachment Code2 is missing)

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<div class="post-metadata">

**Author:** ![aweni](https://avatars.discourse-cdn.com/v4/letter/a/db5fbb/32.png) [@aweni](https://community.freefem.org/u/aweni)\
**Post date:** [June 7, 2023, 4:23pm UTC](https://community.freefem.org/t/erreur-de-compilation/2502/7 "2023-06-07T16:23:02Z")

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hi professeur.  
This is my script .

[code\_frefem++.edp](https://community.freefem.org/uploads/short-url/44fE8IfNVQqvay42J14GBOyTQ0o.edp) (6.63 KB)

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<div class="post-metadata">

**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\
**Post date:** [July 14, 2023, 9:47am UTC](https://community.freefem.org/t/erreur-de-compilation/2502/8 "2023-07-14T09:47:48Z")

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you mesh is crazy:

mesh3 Th= cube(1,1,1,[0.02_x,0.01_y,0.01\*y]) ;  
it is flat objet!

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<div class="post-metadata">

**Author:** ![aweni](https://avatars.discourse-cdn.com/v4/letter/a/db5fbb/32.png) [@aweni](https://community.freefem.org/u/aweni)\
**Post date:** [July 14, 2023, 10:05am UTC](https://community.freefem.org/t/erreur-de-compilation/2502/9 "2023-07-14T10:05:00Z")

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yes I work with a thin plate.