diff --git a/extensions/fablabchemnitz/cartography_hatches_grains/hatches_grains.inx b/extensions/fablabchemnitz/cartography_hatches_grains/hatches_grains.inx
new file mode 100644
index 00000000..564b806a
--- /dev/null
+++ b/extensions/fablabchemnitz/cartography_hatches_grains/hatches_grains.inx
@@ -0,0 +1,81 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
+    <name>Hatches And Grains</name>
+    <id>fablabchemnitz.de.hatches_and_grains</id>
+    <param name="tab" type="notebook">
+        <page name="splash" gui-text="Hatches">
+            <label>Create standardized hatches to differentiate or prioritize cartographic objects.</label>
+            <label appearance="header">Hatches settings</label>
+            <param name="type" type="optiongroup" appearance="combo" gui-text="Sort of hatches:">
+                <option value="h">Continuous</option>
+                <option value="d">Discontinuous</option>
+            </param>
+            <param name="angle" type="optiongroup" appearance="combo" gui-text="Orientation:">
+                <option value="0">―</option>
+                <option value="135">⟋</option>
+                <option value="90">|</option>
+                <option value="45">⟍</option>
+            </param>
+            <param name="thickness" type="optiongroup" appearance="combo" gui-text="Thickness:">
+                <option value="1">1px</option>
+                <option value="3">3px</option>
+                <option value="5">5px</option>
+            </param>
+            <param name="spacing" type="optiongroup" appearance="combo" gui-text="Spacing:">
+                <option value="8">8px</option>
+                <option value="10">10px</option>
+                <option value="12">12px</option>
+                <option value="15">15px</option>
+                <option value="20">20px</option>
+                <option value="25">25px</option>
+                <option value="30">30px</option>
+                <option value="40">40px</option>
+                <option value="50">50px</option>
+            </param>
+            <label appearance="header">Hatches color</label>
+            <param name="hcolor" type="color" gui-text="Hatches color" />
+        </page>
+        <page name="grains_page" gui-text="Grains">
+            <label>Create standardized grains to differentiate or prioritize cartographic objects.</label>
+            <label appearance="header">Grains settings</label>
+            <param name="type_grain" type="optiongroup" appearance="combo" gui-text="Grains:">
+                <option value="grain_v">V</option>
+                <option value="grain_m">ʌ</option>
+                <option value="grain_p">+</option>
+                <option value="grain_x">X</option>
+                <option value="grain_c">○</option>
+                <option value="grain_r">●</option>
+            </param>
+            <param name="size" type="optiongroup" appearance="combo" gui-text="Size:">
+                <option value="1">Very small</option>
+                <option value="2">Small</option>
+                <option value="3">Medium</option>
+                <option value="4">Large</option>
+            </param>
+            <label appearance="header">Grain color</label>
+            <param name="gcolor" type="color" gui-text="Grain color" />
+        </page>
+        <page name="info" gui-text="Information">
+            <label xml:space="preserve">
+This mapping module is intended for the community of geographers and cartographers.
+
+It makes it possible to create visual variables like "hatch" or "grain" on surface or point implantation, in order to differentiate or prioritize the cartographic information.
+
+Laurent Porcheret 
+Géographe - cartographe / Geographer - cartographer
+Sorbonne université - INSPE de Paris
+V.15.01.2020</label>
+        </page>
+    </param>
+    <effect>
+        <object-type>all</object-type>
+        <effects-menu>
+            <submenu name="FabLab Chemnitz">
+                <submenu name="Shape/Pattern from existing Object(s)"/>
+            </submenu>
+        </effects-menu>
+    </effect>
+    <script>
+        <command location="inx" interpreter="python">hatches_grains.py</command>
+    </script>
+</inkscape-extension>
\ No newline at end of file
diff --git a/extensions/fablabchemnitz/cartography_hatches_grains/hatches_grains.py b/extensions/fablabchemnitz/cartography_hatches_grains/hatches_grains.py
new file mode 100644
index 00000000..b4bad268
--- /dev/null
+++ b/extensions/fablabchemnitz/cartography_hatches_grains/hatches_grains.py
@@ -0,0 +1,144 @@
+#!/bin/env python3
+#
+# Copyright (C) 2020 Marc Jeanmougin, Laurent Porcheret
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+#
+# Thanks to Bénédicte Cuperly for reminding me to do this and for her feedback
+
+
+""" Geography patterns """
+
+import math
+import inkex
+from inkex import Pattern, PathElement, Circle, Rectangle, AbortExtension
+
+GRAIN_V="m 0 0 10 20 10 -20"
+GRAIN_VI="m 0 20 10 -20 10 20"
+GRAIN_PLUS="M 10 0 10 20 M 0 10 20 10"
+GRAIN_X="M 0 0 20 20 M 0 20 20 0"
+
+
+class Geography(inkex.EffectExtension):
+    
+    def add_arguments(self, pars):
+        pars.add_argument('--tab', default='grains_page', help='grains_page or hatches_page')
+        pars.add_argument('--type', default='h', help='h|d')
+        pars.add_argument('--angle', default='0', help='angle')
+        pars.add_argument('--thickness', default='1', help='width')
+        pars.add_argument('--spacing', default='8', help='spacing between hatches')
+        pars.add_argument('--type_grain', default='grain_v', help='Shape of patterns (v^+xoO)')
+        pars.add_argument('--size', default='1', help='size of grain')
+        pars.add_argument('--hcolor', default=inkex.Color(255), type=inkex.Color, help='color of hatches')
+        pars.add_argument('--gcolor', default=inkex.Color(255), type=inkex.Color, help='color of grains')
+
+    def effect(self):
+        #step 0: find desired id
+        i=self.get_id()
+        #step 1: add stuff in defs if not present
+        if self.svg.getElementById(i) is None:
+            #construct it
+            newNode = self.svg.defs.add(Pattern())
+            self.construct(newNode)
+        
+        #step 2: assign
+        for node in self.svg.selection.values():
+            node.style['fill'] = "url(#"+i+")"
+            node.set('fill', "url(#"+i+")")
+
+    def construct(self, node):
+        if(self.options.tab == "grains_page"):
+            self.construct_grain(node)
+        else:
+            self.construct_hatch(node)
+        node.set('patternUnits', "userSpaceOnUse")
+        node.set('id', self.get_id())
+    
+    def get_id(self):
+        if(self.options.tab=="grains_page"):
+            return "inkgeo_"+self.options.type_grain+"_"+self.options.size+"_"+str(int(self.options.gcolor))
+        else:
+            return "inkgeo_"+self.options.type+"_"+self.options.angle+"_"+self.options.thickness+"_"+self.options.spacing+"_"+str(int(self.options.hcolor))
+
+
+    def construct_grain(self, node):
+        size=str(math.sqrt(float(self.options.size)))
+        node.set('width', "100")
+        node.set('height', "100")
+        n1=0
+        n2=0
+        node.style="stroke-width:4;"
+        if self.options.type_grain == "grain_c" or self.options.type_grain == "grain_r":
+            n1 = node.add(Circle())
+            n2 = node.add(Circle())
+            n1.set('cx',10)
+            n1.set('cy',10)
+            n1.set('r',10)
+            n2.set('cx',10)
+            n2.set('cy',10)
+            n2.set('r',10)
+            if self.options.type_grain == "grain_c":
+                node.style.set_color(self.options.gcolor, 'stroke')
+                node.set('fill', "none")
+            else:
+                node.style.set_color(self.options.gcolor, 'stroke')
+                node.style.set_color(self.options.gcolor, 'fill')
+        else:
+            node.style.set_color(self.options.gcolor, 'stroke')
+            node.set('fill', "none")
+            #paths
+            n1 = node.add(PathElement())
+            n2 = node.add(PathElement())
+            if self.options.type_grain == "grain_v":
+                n1.set('d', GRAIN_V)
+                n2.set('d', GRAIN_V)
+            elif self.options.type_grain == "grain_m":
+                n1.set('d', GRAIN_VI)
+                n2.set('d', GRAIN_VI)
+            elif self.options.type_grain == "grain_p":
+                n1.set('d', GRAIN_PLUS)
+                n2.set('d', GRAIN_PLUS)
+            elif self.options.type_grain == "grain_x":
+                n1.set('d', GRAIN_X)
+                n2.set('d', GRAIN_X)
+        n1.set('transform', "translate(5,5)scale("+size+")")
+        n2.set('transform', "translate(55,55)scale("+size+")")
+        node.set('patternTransform', "scale(0.1)")
+
+    def construct_hatch(self,node):
+        h = int(self.options.spacing)+int(self.options.thickness)
+        node.set('width', str(h))
+        node.set('patternTransform', "rotate("+self.options.angle+")")
+        r = node.add(Rectangle())
+        r.set('x', "0")
+        r.set('y', "0")
+        r.set('height', self.options.thickness)
+        r.style.set_color(self.options.hcolor, 'fill')
+        if self.options.type=="h":
+            node.set('height',str(h))
+            r.set('width', str(h))
+        else:
+            node.set('height',str(2*h))
+            r.set('width', str(h/2))
+            r2 = node.add(Rectangle())
+            r2.set('x', str(h/2))
+            r2.set('y', str(h))
+            r2.set('width', str(h/2))
+            r2.set('height', self.options.thickness)
+            r2.style.set_color(self.options.hcolor, 'fill')
+
+
+if __name__ == '__main__':
+    Geography().run()
diff --git a/extensions/fablabchemnitz/cartography_hatches_grains/locale/fr/LC_MESSAGES/hatches_grains.mo b/extensions/fablabchemnitz/cartography_hatches_grains/locale/fr/LC_MESSAGES/hatches_grains.mo
new file mode 100644
index 00000000..46d34d30
Binary files /dev/null and b/extensions/fablabchemnitz/cartography_hatches_grains/locale/fr/LC_MESSAGES/hatches_grains.mo differ
diff --git a/extensions/fablabchemnitz/cartography_hatches_grains/locale/fr/hatches_grains.po b/extensions/fablabchemnitz/cartography_hatches_grains/locale/fr/hatches_grains.po
new file mode 100644
index 00000000..62ff9b42
--- /dev/null
+++ b/extensions/fablabchemnitz/cartography_hatches_grains/locale/fr/hatches_grains.po
@@ -0,0 +1,128 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: hatches_grains\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2020-09-28 11:27+0200\n"
+"PO-Revision-Date: 2020-09-28 11:32+0200\n"
+"Language: fr\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n > 1);\n"
+"Last-Translator: \n"
+"Language-Team: \n"
+"X-Generator: Poedit 2.3\n"
+
+#: hatches_grains.inx:3
+msgid "Hatches and grains"
+msgstr "Hachures et grains"
+
+#: hatches_grains.inx:11
+msgid "Hatches"
+msgstr "Hachures"
+
+#: hatches_grains.inx:12
+msgid ""
+"\n"
+"Create standardized hatches to differentiate or prioritize cartographic "
+"objects.  \n"
+"  "
+msgstr ""
+"\n"
+"Crée des hachures standardisées pour différencier ou prioriser des objets "
+"cartographiques.\n"
+" "
+
+#: hatches_grains.inx:16
+msgid "Hatches settings"
+msgstr "Paramètres de hachures"
+
+#: hatches_grains.inx:18
+msgid "Sort of hatches:"
+msgstr "Type de hachures :"
+
+#: hatches_grains.inx:23
+msgid "Orientation:"
+msgstr "Orientation :"
+
+#: hatches_grains.inx:30
+msgid "Thickness:"
+msgstr "Épaisseur :"
+
+#: hatches_grains.inx:37
+msgid "Spacing:"
+msgstr "Espacement :"
+
+#: hatches_grains.inx:49 hatches_grains.inx:50
+msgid "Hatches color"
+msgstr "Couleur de hachures"
+
+#: hatches_grains.inx:55
+msgid "Grains"
+msgstr "Grains"
+
+#: hatches_grains.inx:57
+msgid ""
+"\n"
+"Create standardized grains to differentiate or prioritize cartographic "
+"objects.\n"
+"  "
+msgstr ""
+"\n"
+"Crée des grains standardisées pour différencier ou prioriser des objets "
+"cartographiques.\n"
+" "
+
+#: hatches_grains.inx:61
+msgid "Grains settings"
+msgstr "Paramètres de grains"
+
+#: hatches_grains.inx:63
+msgid "Grains:"
+msgstr "Grains :"
+
+#: hatches_grains.inx:72
+msgid "Size:"
+msgstr "Taille :"
+
+#: hatches_grains.inx:79 hatches_grains.inx:80
+msgid "Grain color"
+msgstr "Couleur de grains"
+
+#: hatches_grains.inx:86
+msgid "Information"
+msgstr "Information"
+
+#: hatches_grains.inx:87
+msgid ""
+"\n"
+"This mapping module is intended for the community of geographers and "
+"cartographers.\n"
+"\n"
+"It makes it possible to create visual variables like \"hatch\" or \"grain\" "
+"on surface or point implantation, in order to differentiate or prioritize "
+"the cartographic information.\n"
+"\n"
+"Laurent Porcheret \n"
+"Géographe - cartographe / Geographer - cartographer\n"
+"Sorbonne université - INSPE de Paris\n"
+"V.15.01.2020"
+msgstr ""
+"\n"
+"Ce module est destiné à la communauté des géographes et des cartographes.\n"
+"Il permet de créer des variables visuelles telles que des hachures ou des "
+"grains sur des surfaces ou des ponctuels, pour différencier ou hiérarchiser "
+"des informations cartographiques.\n"
+"\n"
+"Laurent Porcheret \n"
+"Géographe - cartographe / Geographer - cartographer\n"
+"Sorbonne université - INSPE de Paris"
+
+#: hatches_grains.inx:102
+msgid "Cartography"
+msgstr "Cartographie"
diff --git a/extensions/fablabchemnitz/cartography_hatches_grains/locale/hatches_grains.pot b/extensions/fablabchemnitz/cartography_hatches_grains/locale/hatches_grains.pot
new file mode 100644
index 00000000..59fabdca
--- /dev/null
+++ b/extensions/fablabchemnitz/cartography_hatches_grains/locale/hatches_grains.pot
@@ -0,0 +1,110 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2020-09-28 11:33+0200\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: hatches_grains.inx:3
+msgid "Hatches and grains"
+msgstr ""
+
+#: hatches_grains.inx:11
+msgid "Hatches"
+msgstr ""
+
+#: hatches_grains.inx:12
+msgid ""
+"\n"
+"Create standardized hatches to differentiate or prioritize cartographic "
+"objects.  \n"
+"  "
+msgstr ""
+
+#: hatches_grains.inx:16
+msgid "Hatches settings"
+msgstr ""
+
+#: hatches_grains.inx:18
+msgid "Sort of hatches:"
+msgstr ""
+
+#: hatches_grains.inx:23
+msgid "Orientation:"
+msgstr ""
+
+#: hatches_grains.inx:30
+msgid "Thickness:"
+msgstr ""
+
+#: hatches_grains.inx:37
+msgid "Spacing:"
+msgstr ""
+
+#: hatches_grains.inx:49 hatches_grains.inx:50
+msgid "Hatches color"
+msgstr ""
+
+#: hatches_grains.inx:55
+msgid "Grains"
+msgstr ""
+
+#: hatches_grains.inx:57
+msgid ""
+"\n"
+"Create standardized grains to differentiate or prioritize cartographic "
+"objects.\n"
+"  "
+msgstr ""
+
+#: hatches_grains.inx:61
+msgid "Grains settings"
+msgstr ""
+
+#: hatches_grains.inx:63
+msgid "Grains:"
+msgstr ""
+
+#: hatches_grains.inx:72
+msgid "Size:"
+msgstr ""
+
+#: hatches_grains.inx:79 hatches_grains.inx:80
+msgid "Grain color"
+msgstr ""
+
+#: hatches_grains.inx:86
+msgid "Information"
+msgstr ""
+
+#: hatches_grains.inx:87
+msgid ""
+"\n"
+"This mapping module is intended for the community of geographers and "
+"cartographers.\n"
+"\n"
+"It makes it possible to create visual variables like \"hatch\" or \"grain\" "
+"on surface or point implantation, in order to differentiate or prioritize "
+"the cartographic information.\n"
+"\n"
+"Laurent Porcheret \n"
+"Géographe - cartographe / Geographer - cartographer\n"
+"Sorbonne université - INSPE de Paris\n"
+"V.15.01.2020"
+msgstr ""
+
+#: hatches_grains.inx:102
+msgid "Cartography"
+msgstr ""