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Happy New 2017 Year!

 

All of us at Landviser, LLC (USA) and IP GeoPro (Russia) are wishing our friends, collegues, customers and everybody else around the world Happy Holidays and a Great New Year! Looking forward to change, trust and fairness for all in 2017!!! We, as a small geo-consulting company, would continue to do our best in studying our Morther Earth and bringing Joy to the World!

Happy New 2016 Year!

All of us at Landviser, LLC (USA) and IP GeoPro (Russia) are wishing our friends, collegues, customers and everybody else around the world Happy Holidays and Great New Year!

С Новым 2015 Годом!

Желаем всем нашим друзьям и коллегам веселых праздников, а также счастья, здоровья и успехов в Новом Году!

2015ru

С Нового Года мы расширяем ассортимент геотехнических услуг и предлагаем разнообразное геофизическое оборудование произведенное в России: наш эксклюзивный портативный прибор измеряющий электрическое сопротивление, проводимость и потенциал, LandMapper; электромагнитный сканнер АЭМП-14 и 16-канальную 64-электродную установку (500 м глубинная томография), Скала-64 (КБ Электрометрии, Новосибирск)! Наши приборы не имеют аналогов и пользуются популярностью во всем мире.

Также:

ГПС отечественных и зарубежных производителей. Помощь в логистике по импорту-экспорту геотехнического оборудования из США

ГИС и Геофизические консультации и классы на русском и английском

Email: info@landviser.net     Web: www.landviser.net

Мы работаем с KB Electrometry (Россия), GeoTOMO Software (Австралия/Малайзия),  ГПС производители - Trimble и F4Devices  (США), портативные агро-химические лаборатории LaMotte (США) и многими другими.

Tips and Tricks for linking data in ArcGIS

There are two basic types of joins in GIS tables and geo-data: spatial and relational (based on table IDs). Spatial join is the key concept in GIS and that is what sets all GIS technologies apart from other relational databases. Here we start with performing relational joint of list of zipcodes with names to the US zipcode shapefile.

Relational Join

To join table to shapefile based on ID (zipcode) the data type in the column you are planning to join should be the same. Let’s check on data type in Zip code shapefile. Right click on shapefile, select properties and look under Fields tab. The format of the data is Text and size is 5 digits.

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Converting multiple KML files into geodatabase for GIS project in ArcMap Desktop

Google Earth is wide-spread free GIS application which allows users to draw their own point, lines and polygons. Very often users create many separate files in KML or KMZ format and upon moving to the next step in GIS analysis are trying to recreate the same geographies in ArcGIS editing software. The fastest way to bring all those custom data into GIS project is described here. Assuming that you have Google Earth and ArcGIS Desktop 10.2 installed, bring all the KML/KMZ files into Google Earth through File\Open (you can select multiple files from the same folder):

2D Dipole-Dipole Electrical Tomography with LandMapper

Manual measuring of electrical resistivity 2D cross-section is possible with LandMapper with supplied (optional) or made by user cable set.

There are two modifications of 2D cable set offered and tested by Landviser, LLC:

  1. Mobile shallow (~2 m depth) set consisted of two T-style probes (AB and MN dipoles) similar to mapping probes. The dipoles are set at 1 m size with possible separation between dipoles (wire length) no more than 5 meters (n=5).
  2. Stationary set (~ 14 m depth) where electrodes are hammered on the soil surface along the straight line at one meter distance. Electrodes are simple metal spikes/nails and is sourced locally (are NOT provided by Landviser, LLC). We supply wires with banana-plug connections to LandMapper terminals on one end and alligator clips on the other end to connect with electrodes.

Principle of measurements with both sets is the same for both cable sets and is illustrated by figure below. You can also watch instructional videos on our YouTube Channel - LandviserLLC

Местоположение

0° 34' 51.8304" N, 71° 51' 2.1096" W

Building geodatabase in ArcMap 10 Desktop

Those step-by-step tutorials are created for novices in GIS. By design, they are very simple and provide only essential and practical information to accomplish most common tasks with GIS software. For in-depth coverage of the topic, please, refer to ESRI ArcGIS Resources http://resources.arcgis.com/en/help/main/10.1/

The three primary types of datasets in GIS

Geodatabase can incorporate links to the non-spatial databases, shapefiles, images, etc. A key geodatabase concept is the dataset. It is the primary mechanism used to organize and use geographic information in ArcGIS. The geodatabase contains three primary dataset types:

  • Feature classes
  • Raster datasets
  • Tables

Creating a collection of these dataset types is the first step in designing and building a geodatabase. Users typically start by building a number of these fundamental dataset types. Then they add to or extend their geodatabases with more advanced capabilities (such as by adding topologies, networks, or subtypes) to model GIS behavior, maintain data integrity, and work with an important set of spatial relationships.

Geodatabase elements

All GIS users will work with three fundamental dataset types regardless of the system they use. They'll have a set of feature classes (much like a folder full of Esri shapefiles); they'll have a number of attribute tables (dBase files, Microsoft Access tables, Excel spreadsheets, DBMSs, and so forth); and most of the time, they'll also have a large set of imagery and raster datasets to work with.

Fundamentally, all geodatabases will contain this same kind of content. This collection of datasets can be thought of as the universal starting point for your GIS database design.

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