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Hi! Have a way to colorize shapes by a filter with values of fields? DBF: Record 1, Field1 = "A" Record 2, Field1 = "B" Record 3, Field1 = "A" Color filter rules: [code]if (Field1 == "A") { Color.Red } if (Field1 == "B") { Color.Blue } else { Color.Whi... أكثر...

I have been using QGIS to insert point data accompanied by information for each point into PostGIS. When I open PGAdmin to take a look at the table rows I noticed a column near the start of each row called "geom" which is obviously point geometry with I believe a SRID of 4326. Now my main...

I recently upgraded to MySQL 5.7.9 & am using MyISAM for my table engine. Adding a new POINT column like so: ALTER TABLE ADD centroid POINT NOT NULL; gives this error: ERROR 1138 (22004): Invalid use of NULL value I can create the column without NOT NULL but then I am unable to...

I am new to using GIS and trying to learn on the fly while on the job. I want to take a basemap and add a layer where I can draw on features. Specifically, I plant tree rows, and I need to map them out for planning purposes. Additionally, I want to go back and draw on all of the areas we have...

Hi and thank you for the help, I have a large point cloud (LAS file) and I am trying to thin this using a complex technique. I know it is possible to thin a point cloud using simple techniques such as extracting every n-th point. However the point cloud I am working with is more dense in some...

I am using arc gis 10.1 and i would like to change the coordinate system of a layer that is allready attached to a drawing so that it matches the other layers. أكثر...

The data used in this visualization was acquired from the U.S. Census Bureau’s 2009-2013 American Community Survey on Work Status in the Past 12 Months by Age by Employment Status for the Civilian Population 65 Years and Over. Each value represents the estimated amount of citizens in each age...

Please my problem with ArcGIS 10.3 that I tried many times to select some features (polygons) in order to delete them, but the ArcMap always selecting all the polygons not only what I have selected. So, please what I have to do to let ArcMap only select what I need. أكثر...

If you ever wondered whether one person can really make a difference when it comes to climate change… the answer is YES! Dr. Duvall presents at “Science in the Pub” in Canberra, Australia. Just ask EPA’s Dr. Rachelle Duvall. Duvall spent the last several months in Australia as an Embassy...

Kirk Jalbert, FracTracker’s Manager of Community Based Research & Engagement, interviews Craig Stevens, one of FracTracker’s 2015 Community Sentinels Award Winners. Craig Stevens is a 6th*generation landowner from Silver Lake Township in Susquehanna County, Pennsylvania. Craig and his neighbors...

Technology advances so quickly that it’s mind blowing sometimes. Look at the proliferation of drone technology, for example. In mid 2015, Amazon formally asked the FAA for permission to test their commercial drones for use in delivery of packages in 30 minutes or less. Personally, I don’t think...

I'm working on a ArcMap plugin using ArcObjects that will change the location of a shapefile that is broken. However, I'm getting HResult Error E_Fail whenever I try opening the feataure class. This is the specific HResult value: -2147467259 Here's the setup. I have a MXD file with a shapefile...

The data collected for poverty levels in Vernon, Connecticut, indicates that a majority of the population is living above a 200% of the poverty level. The remainder of the population is split similarly between a 100%-200% poverty level and below the poverty level. On average, poverty is more...

Hello! I*am one of UConn MAGIC’s interns for the Fall 2015 Semester. As a way of establishing the basics of Tableau, I developed – and now present to you some information about Connecticut’s standardized test score results. I encourage you to have a look and draw your own conclusions...

The information represented was drawn from the U.S. Census Bureau’s 2014 1-Year American Community Survey on Grandparents.*Each value represents a percentage of an age group who composes each category. This data may be useful in the observation of grandparent demographic information for...

The data represented was drawn from the American Community Survey 2009-2013 5-year estimates tables for*Employment Status by Age. The measured values represent a percentage of the total population within a given age group in the labor force, the percentage of the total population within a given...

The data used for this visualization was acquired from the U.S. Census Bureau’s 2014 American Community Survey 1-Year Estimates on*Comparative Demographic Estimates. The measured values represent the percentage of the total population comprised of each given age group from 2010 to 2014. The...

WHAT TWO CLASSES? Yes – QGIS and PostGIS in one event. This one is in Atlanta just outside Decatur Georgia. Why team up QGIS and PostGIS into a two day event? Why not – it’s a great combination and for those of you saying “I WANT DO DITCH BUT I DON’T HAVE ALTERNATIVES” – well – here’s your...

We are pleased to announce that AppStudio for ArcGIS v1.0 is final.* Thank you to all the beta testers who provided valuable feedback and helped the team make a great product. Let’s go over a few of the key points that make AppStudio such a unique and powerful tool. AppStudio makes it easy...

I'm trying to implement this function to create a hex grid over a layer. However, when I implement it and export it via pgsql2shp the results ends up empty. The query I used is below CREATE TABLE hex_grid (gid serial not null primary key); SELECT addgeometrycolumn('hex_grid','the_geom'...