Thanks Ethan, 
it’s the one I am looking for….
you are right, I cannot run it directly…

With the name, I was able to find the original web site at EPFL and download 
the applet :
https://www.epfl.ch/schools/sb/research/iphys/teaching/crystallography/escher-web-sketch/
 
<https://www.epfl.ch/schools/sb/research/iphys/teaching/crystallography/escher-web-sketch/>
There are some other nice utilities there !
thanks a lot !

Laurent

Laurent Maveyraud
PICT, Plateforme Intégrée de Criblage de Toulouse
Université Paul Sabatier / CNRS / I.P.B.S. UMR 5089
Département Biologie Structurale et Biophysique
http://cribligand.ipbs.fr, http://www.ipbs.fr
205 route de Narbonne 31077 TOULOUSE Cedex FRANCE
Tél: +33 (0)561 175 435  Mob.: +33 (0)646 042 111
-------------------------------


1st French Congress on Integrative Structural Biology: please check 
http://bsi-2019.ipbs.fr <http://bsi-2019.ipbs.fr/>


> Le 25 août 2019 à 19:30, Ethan Merritt (UW) <merr...@uw.edu> a écrit :
> 
> On Sunday, 25 August 2019 18:28:35 Laurent Maveyraud wrote:
>> Dear CCP4ers,
>> 
>> a long time ago (something like 10 years, or even more), I used an applet 
>> available on the internet for drawing small schematic 2D crystals (see 
>> below). You had the possibility to draw a small motif (in my case something 
>> like a  histidine side-chain) and then define the lattice you wanted to 
>> generate. I used it a lots for teaching purposes… but I would now like to 
>> refresh my images and generate new examples… Of course, I was not smart 
>> enough to take note of the applet name or address… and google was not able 
>> to help my memory
> 
> I have a copy here:
>       
> http://skuld.bmsc.washington.edu/people/merritt/bc530/local_copies/escher/
> 
> The problem is, it dates back to the good old days before everyone
> got so worried about insecure java applets that java was disabled in
> all the standard browsers.  So chances are you cannot run it in your
> browser, you would have to download the code and run it locally.
> 
>       cheers,
> 
>               Ethan
> 
> 
>> 
>> 
>> Does this reming something to anybody ? Any suggestions for software able to 
>> generate such lattices are also welcome!
>> 
>> thanks a lot !
>> Laurent
>> 
>> 
>> Laurent Maveyraud
>> PICT, Plateforme Intégrée de Criblage de Toulouse
>> Université Paul Sabatier / CNRS / I.P.B.S. UMR 5089
>> Département Biologie Structurale et Biophysique
>> http://cribligand.ipbs.fr, http://www.ipbs.fr
>> 205 route de Narbonne 31077 TOULOUSE Cedex FRANCE
>> Tél: +33 (0)561 175 435  Mob.: +33 (0)646 042 111
>> -------------------------------
>> 
>> 
>> 1st French Congress on Integrative Structural Biology: please check 
>> http://bsi-2019.ipbs.fr <http://bsi-2019.ipbs.fr/>
>> 
>> 
>> 
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>> 
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> 
> -- 
> Ethan A Merritt, Dept of Biochemistry
> Biomolecular Structure Center,  K-428 Health Sciences Bldg
> MS 357742,   University of Washington, Seattle 98195-7742
> 
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