topic Re: What is the size of unit of measure in the fishnet mesh of a heat maps? in ArcGIS Online Questions https://community.esri.com/t5/arcgis-online-questions/what-is-the-size-of-unit-of-measure-in-the-fishnet/m-p/606476#M30299 <HTML><HEAD></HEAD><BODY><P>Understand...</P><P>Thank you so much for answering my question Dan.</P><P></P><P>Katya</P></BODY></HTML> Tue, 19 Dec 2017 15:21:10 GMT KatyaDiaz 2017-12-19T15:21:10Z What is the size of unit of measure in the fishnet mesh of a heat maps? https://community.esri.com/t5/arcgis-online-questions/what-is-the-size-of-unit-of-measure-in-the-fishnet/m-p/606474#M30297 <HTML><HEAD></HEAD><BODY><P>Hi everyone!</P><P></P><P>I have a new question... I am doing some web maps for an story map and I find the option of represent my point layer in a heat map, I read in a blog that this option work with the Kernel Density, but I don't find information about the size of&nbsp;unit of measure in&nbsp;the fishnet mesh. Anyone know this?</P><P></P><P>Thank you in advance for your help!</P><P></P><P>Katya</P></BODY></HTML> Mon, 18 Dec 2017 20:40:54 GMT https://community.esri.com/t5/arcgis-online-questions/what-is-the-size-of-unit-of-measure-in-the-fishnet/m-p/606474#M30297 KatyaDiaz 2017-12-18T20:40:54Z Re: What is the size of unit of measure in the fishnet mesh of a heat maps? https://community.esri.com/t5/arcgis-online-questions/what-is-the-size-of-unit-of-measure-in-the-fishnet/m-p/606475#M30298 <HTML><HEAD></HEAD><BODY><P>All units of density are expressed in terms of their linear unit...with or without scaling...</P><BLOCKQUOTE class="jive_macro_quote jive-quote jive_text_macro"><P></P><SPAN style="display: inline !important; float: none; background-color: transparent; color: #4d4d4d; font-family: 'Lucida Grande','Segoe UI','Arial',sans-serif; font-size: 13.93px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; line-height: 23.82px; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">by default, a unit is selected based on the linear unit of the projection definition of the input polyline feature data or as otherwise specified in the </SPAN><A href="http://pro.arcgis.com/en/pro-app/tool-reference/environment-settings/output-coordinate-system.htm" style="background-color: transparent; color: #007ac2; font-family: &amp;quot; lucida grande&amp;quot;,&amp;quot;segoe ui&amp;quot;,&amp;quot;arial&amp;quot;,sans-serif; font-size: 13.93px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">output coordinate system</A><SPAN style="display: inline !important; float: none; background-color: transparent; color: #4d4d4d; font-family: 'Lucida Grande','Segoe UI','Arial',sans-serif; font-size: 13.93px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; line-height: 23.82px; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;"> environment setting.</SPAN></BLOCKQUOTE><P></P><P>Which means, if your coordinate system is in meters (ie projected data) then area is in meters squared.&nbsp; The number of observations (N) per area unit is density, hence N per m^2.&nbsp; When N gets large, then area may be scaled up to hectares or km^2 and N gets scaled down in a similar fashion..&nbsp; In short... basic math and ratios rule the roost</P></BODY></HTML> Mon, 18 Dec 2017 21:18:34 GMT https://community.esri.com/t5/arcgis-online-questions/what-is-the-size-of-unit-of-measure-in-the-fishnet/m-p/606475#M30298 DanPatterson_Retired 2017-12-18T21:18:34Z Re: What is the size of unit of measure in the fishnet mesh of a heat maps? https://community.esri.com/t5/arcgis-online-questions/what-is-the-size-of-unit-of-measure-in-the-fishnet/m-p/606476#M30299 <HTML><HEAD></HEAD><BODY><P>Understand...</P><P>Thank you so much for answering my question Dan.</P><P></P><P>Katya</P></BODY></HTML> Tue, 19 Dec 2017 15:21:10 GMT https://community.esri.com/t5/arcgis-online-questions/what-is-the-size-of-unit-of-measure-in-the-fishnet/m-p/606476#M30299 KatyaDiaz 2017-12-19T15:21:10Z