topic Semivariogram/covariance binned and average points in ArcGIS GeoStatistical Analyst Questions https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/semivariogram-covariance-binned-and-average-points/m-p/508941#M1140 <HTML><HEAD></HEAD><BODY><P><SPAN>I am sorry if I am unaware of some very basic ideas of semivariogram. I am trying to understand the difference between binned points and averaged points. In this document (</SPAN><A class="jive-link-external-small" href="https://community.esri.com/external-link.jspa?url=http%3A%2F%2Fdesktop.arcgis.com%2Fen%2Farcmap%2Flatest%2Fextensions%2Fgeostatistical-analyst%2Ffitting-a-model-to-the-empirical-semivariogram.htm" rel="nofollow" target="_blank">http://desktop.arcgis.com/en/arcmap/latest/extensions/geostatistical-analyst/fitting-a-model-to-the-empirical-semivariogram.htm</A><SPAN>) it says: "</SPAN><EM>Binned values are shown as red dots, and are generated by grouping (binning) empirical semivariogram/covariance points together using square cells that are one lag wide. Average points are shown as blue crosses, and are generated by binning empirical semivariogram/covariance points that fall within angular sectors.</EM>"</P><P>My question is, what does it mean by "<EM>fall within angular sectors"</EM>.</P><P>Any suggestion will be helpful.</P></BODY></HTML> Tue, 07 Jun 2016 21:58:46 GMT MustafaSikder1 2016-06-07T21:58:46Z Semivariogram/covariance binned and average points https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/semivariogram-covariance-binned-and-average-points/m-p/508941#M1140 <HTML><HEAD></HEAD><BODY><P><SPAN>I am sorry if I am unaware of some very basic ideas of semivariogram. I am trying to understand the difference between binned points and averaged points. In this document (</SPAN><A class="jive-link-external-small" href="https://community.esri.com/external-link.jspa?url=http%3A%2F%2Fdesktop.arcgis.com%2Fen%2Farcmap%2Flatest%2Fextensions%2Fgeostatistical-analyst%2Ffitting-a-model-to-the-empirical-semivariogram.htm" rel="nofollow" target="_blank">http://desktop.arcgis.com/en/arcmap/latest/extensions/geostatistical-analyst/fitting-a-model-to-the-empirical-semivariogram.htm</A><SPAN>) it says: "</SPAN><EM>Binned values are shown as red dots, and are generated by grouping (binning) empirical semivariogram/covariance points together using square cells that are one lag wide. Average points are shown as blue crosses, and are generated by binning empirical semivariogram/covariance points that fall within angular sectors.</EM>"</P><P>My question is, what does it mean by "<EM>fall within angular sectors"</EM>.</P><P>Any suggestion will be helpful.</P></BODY></HTML> Tue, 07 Jun 2016 21:58:46 GMT https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/semivariogram-covariance-binned-and-average-points/m-p/508941#M1140 MustafaSikder1 2016-06-07T21:58:46Z Re: Semivariogram/covariance binned and average points https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/semivariogram-covariance-binned-and-average-points/m-p/508942#M1141 <HTML><HEAD></HEAD><BODY><P>In the images shown on that page, the figure to the lower left is trying to whether there is any directionality in the data,&nbsp; The sectors, presumably are that directional representation .&nbsp; Similar information can be portrayed when looking at </P><P><A href="http://desktop.arcgis.com/en/arcmap/latest/extensions/geostatistical-analyst/examining-spatial-autocorrelation-and-directional-variation.htm" title="http://desktop.arcgis.com/en/arcmap/latest/extensions/geostatistical-analyst/examining-spatial-autocorrelation-and-directional-variation.htm">Examining spatial autocorrelation and directional variation—Help | ArcGIS for Desktop</A> </P></BODY></HTML> Tue, 07 Jun 2016 22:15:55 GMT https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/semivariogram-covariance-binned-and-average-points/m-p/508942#M1141 DanPatterson_Retired 2016-06-07T22:15:55Z Re: Semivariogram/covariance binned and average points https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/semivariogram-covariance-binned-and-average-points/m-p/508943#M1142 <HTML><HEAD></HEAD><BODY><P>Do you have any clue how this angular sector is calculated or can you give an example? </P></BODY></HTML> Tue, 07 Jun 2016 23:04:12 GMT https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/semivariogram-covariance-binned-and-average-points/m-p/508943#M1142 MustafaSikder1 2016-06-07T23:04:12Z Re: Semivariogram/covariance binned and average points https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/semivariogram-covariance-binned-and-average-points/m-p/508944#M1143 <HTML><HEAD></HEAD><BODY><P>they don't cite the forumlae used, but the images refer to 'brushing' on the figures to select data so you can examine the various associations... this is marginally explained in <A href="http://desktop.arcgis.com/en/arcmap/latest/extensions/geostatistical-analyst/exploratory-spatial-data-analysis-esda-.htm" title="http://desktop.arcgis.com/en/arcmap/latest/extensions/geostatistical-analyst/exploratory-spatial-data-analysis-esda-.htm">Exploratory Spatial Data Analysis (ESDA)—Help | ArcGIS for Desktop</A> , for the tools that it covers.&nbsp; I would have to dig myself, but there are many books available, just not with an arcgis basis, which I presume you really want</P></BODY></HTML> Tue, 07 Jun 2016 23:28:05 GMT https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/semivariogram-covariance-binned-and-average-points/m-p/508944#M1143 DanPatterson_Retired 2016-06-07T23:28:05Z