Gis data sources and cost pdf
File Name: gis data sources and cost .zip
- Data sources
- Geospatial (GIS), Spatial Data and Map Resources
- A Public Health Care Information System Using GIS and GPS: A Case Study of Shiggaon
- Lesson 7 - Understanding GIS Error, Accuracy, and Precision, and Metadata
Locating spatial data can be difficult. This guide is not intended to cover all resources available, but rather list the most commonly requested and updated regularly. Other guides and resources are available from the Map Collection Homepage.
Organizations of any size quickly see a significant return on investment brought about by efficient data processing, accurate map creation, and optimized spatial data management. One of the unique and defining characteristics of Global Mapper is its extensive and varied data format support. Offering direct access to over raster, vector, and elevation data types, Global Mapper supports virtually all types of geospatial data right out of the box, no add-ons required. With new and modified formats being added on an ongoing basis, you can be sure that the software will never be out of date with your data.
Vector, raster, and elevation data can be exported in virtually every common file format as well as many proprietary types. During export, data can be tiled into smaller or more manageable files or the export area can be cropped to a defined area or to the extent of the current screen view. Furthermore, if a local agency or organization develops a Web Mapping Service, a custom link to this data can be easily added to the online data source list.
These web-based datasets can be either streamed in real-time or exported to a local file for offline use. Through agreements with commercial data vendors, Global Mapper also offers fee-based access to premium spatial datasets. These views, which support both top-down 2D rendering as well as oblique 3D viewing, can be independently zoomed and panned and can be resized to make the most efficient use of the available screen space.
As well as the standard point, line and area creating functions, there are also tools for creating specialized geometric features such as range rings, grids, and buffer areas.
Advanced coordinate geometry input can be employed to create objects on the map by simply typing the geometric dimensions of each segment. Editing functions include rotating, scaling, and moving features on the map. Modifications can be applied to entire features or to individual vertices that determine the shape and size of a feature. Global Mapper has full attribute and geometry editing capabilities rivaling any other GIS software on the market today.
Combined with scripting and batching tools, it has the capability to automate many GIS processing tasks. Global Mapper offers limitless possibilities for assigning specific visual characteristics to vector features on the map. Pre-installed or custom symbols can be attributed to points; multiple line styles and weights can be applied to linear features, and solid or patterned fill shading can be assigned to area features. The appearance of features in Global Mapper is usually controlled by the style that has been established for each feature type, but the style can also reflect an attribute of the data allowing for the creation of thematic maps.
Global Mapper includes several powerful terrain analysis tools that are used to process or model elevation data. These functions are included as part of the standard installation and require no additional extensions or plug-in components. Global Mapper is optimized to work with 3D data. It supports many 3D formats including elevation or terrain models as well as 3D mesh formats such as Collada, Wavefront, 3DS Max and more.
When working with terrain layers, several preconfigured shaders are available as well as the ability to create custom shaders. The software includes a powerful 3D Viewer which can be docked and linked to the 2D map so panning, zooming, and adding vector features will automatically replicate in both windows. This powerful functionality also includes the ability to select and measure features in the 3D viewer.
The fly-through tool and also be used to playback a video file synced to any line feature with per-vertex times. The 3D window also allows draping of vector data over imagery, GPS tracking, Skyboxes for rendering a sky simulation in 3D and display and manipulation of 3D meshes such as sketch-up.
There are tools for selecting and editing 3D features and working with the 3D window, 2D window and the path profile in a docked set up enables complex analysis and 3D data manipulation. Global Mapper is the perfect application for visualizing, editing, and analyzing Lidar or point cloud data of any format.
Out of the box, the software supports point clouds of virtually any size and offers tools to utilize this data efficiently and effectively. Recent developments in the application have dramatically improved the rendering and processing speeds, which is especially important when working with the high-density point clouds that are becoming increasingly common.
Global Mapper provides access to the attributes of the point cloud file offering a snapshot of the critical information that is essential for any data processing workflow. A standard function of Global Mapper is its ability to import virtually any image file and to create a geographically aligned and scaled raster layer.
The image rectification process supports the manual input of image pixel and corresponding ground control coordinates or the simple tagging of recognizable points on the image as well as the corresponding locations on a base map layer. Advanced options allow the selection of the rectification method, resampling scheme, and ground control projection parameters. The resulting raster layer can be analyzed and processed just like any other imported layer and can be exported in any one of the supported raster formats.
Global Mapper includes a powerful geocoding function that allows real-world coordinates to be assigned to an imported database of addresses. The geocoding process can use either a preconfigured online service or a user-imported road network to accurately determine the point that represents the location of each address. If necessary, this data, including the coordinate values, can be exported in tabular form or plotted on the map to provide a visual perspective.
The Raster Calculator found under the Analysis menu is used to set up mathematical operations on multi-band imagery to extract different types of information. Users can use predefined formulas, like NDVI and NDWI, or create their own free-hand formulas using common mathematical operations, like addition, subtraction, multiplication, division, and powers, as well as simple operators like absolute value, minimum value, and maximum value of 2 values.
The Graph and Chart Manager allows the user to create graphs and charts from loaded data. The following type of operations are supported:. The software has an extremely powerful export menu guiding the user with a flexible selection interface for everything from translucency to feature descriptions to the encoding of zip files.
Users can display labels or not, highlight cursors, manipulate the export of 3D feature types, and much more including tiling options.
With a compatible GPS receiver attached to the computer, Global Mapper will display the location in real-time superimposed on the current map or data layer. Movement can be tracked or recorded, and waypoints can be created as time-stamped vector features. Many functions in Global Mapper can be performed by initiating a script.
Formatted as a simple ASCII file, a script is commonly used to automate repeating or recurring tasks, eliminating the need to manually process the data. The Global Mapper scripting language supports importing, converting, reprojecting, analyzing, calculating attributes, splitting layers, interactively prompting users for files and folders and exporting all supported data formats.
Examples of the use of extensions include extended format support, enhanced visualization options, or new toolbar buttons. An extension can also be used to provide an interface between Global Mapper and a third-party application.
For more information on extensions, contact a Blue Marble sales representative sales bluemarblegeo. Learn more about the latest features here.
See the value of Global Mapper for yourself. Download a free trial today! Access to Online Data. Flexible View Interface. Feature Rendering. Terrain Analysis. These profiles can be used to calculate a variety of statistics related to the elevation and slope along the path. Additionally, line of sight calculation can be used to visualize any obstructions that may interfere with the view along the profile path.
This is especially useful for the analysis of a radio or broadcast signal. A visualization option allows the Path Profile display to be rendered as a terrain cutaway in the 3D View. View Shed Calculation Similar to the line of sight calculation, the viewshed analysis tool is typically used to determine the area covered, or not covered, from a broadcast site with a specified transmitter height.
The viewshed analysis determines the coverage in all directions within a specified radius from the signal source. Advanced options include Fresnel Zone determination and signal strength loss over distance. Watershed Delineation Based on the terrain morphology, the watershed calculation tool determines the likely linear path of streams and the drainage or catchment areas of those streams.
This tool can also be used to conduct water drop analysis, in which the theoretical flow pattern from a defined source can be mapped.
Contour Creation Any imported or processed elevation layer can be used to generate contours in vector format. Options include customized contour interval spacing and polygon feature generation for determining the area above or below a specified height.
The contouring tool can also be used to identify local peaks and depressions in a terrain layer. Cut and fill calculations can be performed on area features or along a line to simulate the digging of a trench. An optional feature allows the calculation of the break-even height within an area. This represents the elevation value at which the cut and fill volumes will be the same.
This modified terrain modeling capability is particularly useful for visualizing construction sites or road cuts. Sea Level Rise This simple visualization tool provides the means to gauge the impact of a rise in water level in the area surrounding a body of water.
Terrain Painting Using the surface of a terrain model, the Terrain Painting tool provides a convenient way to alter, enhance, or add features to the landscape. The Terrain Paint menu allows users to fill gaps, smooth terrain, raise and lower terrain, and much more.
Map Printing and Web Publishing. When it comes time to share maps or data, Global Mapper offers many output choices. Feature Labeling Global Mapper provides an innovative tool for creating and managing labels on the map. A separate label layer allows individual labels to be moved, edited, or deleted.
It is also possible to establish a defined zoom level range for this layer so that labels will only appear when needed. Cartographic elements such as a scale bar, compass rose, and map legend can be precisely placed within the layout frame and supplementary text and corporate branding graphics can be easily added to the design and saved as a template for future use. For atlas or map book creation, the Map Layout function offers a tool for designing a tiled array of maps, in which all of the pages share a consistent layout structure.
Capture Screen Contents When all you need is a quick view of the map in a common image format, the screen capture function is the simplest option. If necessary, you can even add a world file or projection file so its location will be recognized by other GIS applications.
Additionally, any image file or data layer can be placed at a fixed location on the screen to allow the placement of a corporate logo or banner on the printed map.
The print process supports all standard and customized page sizes including large format or plotter printing. The resulting file includes the coordinate information as well as the individual layer characteristics so that, when viewed in a compatible PDF reader, the inherent geographic details can be displayed.
Web Tile Exporting Global Mapper offers the option to export the current map view as a series of web-ready raster tiles that are compatible with common online map formats, such as Google and Bing Maps. This preconfigured html file allows the map to be easily integrated into an existing web structure. MangoMap Publishing In a joint development effort, Global Mapper users can upload map data directly from the software to an online Mango-hosted map site, which can be easily shared with customers, colleagues, or constituents.
The MangoMap Extension allows users to initially set up their Mango account by purchasing one of three subscription options, and with a couple of mouse clicks, upload the relevant GIS layers into their online Map. For more information, visit the MangoMap page. Lidar and Point Clouds.
Geospatial (GIS), Spatial Data and Map Resources
Organizations of any size quickly see a significant return on investment brought about by efficient data processing, accurate map creation, and optimized spatial data management. One of the unique and defining characteristics of Global Mapper is its extensive and varied data format support. Offering direct access to over raster, vector, and elevation data types, Global Mapper supports virtually all types of geospatial data right out of the box, no add-ons required. With new and modified formats being added on an ongoing basis, you can be sure that the software will never be out of date with your data. Vector, raster, and elevation data can be exported in virtually every common file format as well as many proprietary types. During export, data can be tiled into smaller or more manageable files or the export area can be cropped to a defined area or to the extent of the current screen view. Furthermore, if a local agency or organization develops a Web Mapping Service, a custom link to this data can be easily added to the online data source list.
The error, accuracy, and precision of the GIS data we use in projects are often overlooked when we download data from various government, open source, and commercial sources. Metadata is data about data. We'll explore these topics in more detail in this lesson. This lesson will take us one week to complete. Specific directions for the assignments below can be found in this lesson. If you have any questions, please post them to our Questions?
Health data maps and Geographic Information Systems GIS are significant resources for health planning and health services delivery, particularly at the local level. The ability to visualize the spatial distribution of health status determinants and indicators can be a powerful resource for mobilizing community action to improve the health of residents. Currently, health data maps and other GIS applications tend to be highly technical and specialized, and are therefore of limited use to community members and organizations providing community-based health services. Developing relevant, accessible, and usable GIS and health data maps for communities and local agencies is an important step towards enabling individuals and communities to improve their health and increase their control over it. The final map was prepared by overlaying all the layers generated.
“Data capture costs can account for up to 85% of the cost of a GIS” (Longley et al.,. ). Page © UNIGIS - Salzburg University. Socrates –.
A Public Health Care Information System Using GIS and GPS: A Case Study of Shiggaon
There is no such thing as the perfect GIS data. It is a fact in any science, and cartography is no exception. However, the imperfection of data and its effects on GIS analysis had not been considered in great detail until recent years.
Most projects begin with a search for base data. This lisiting will begin with a few sure-fire sources of data that you can use to build a contextual dataset for a city. We will then work up to strategies for finding more detailed data. One thing to always keep in mind: since you are going to invest time in pulling data together to study a place, you should organize your data well so that you and others can build on what you have done!
Lesson 7 - Understanding GIS Error, Accuracy, and Precision, and Metadata
Расскажи это Чатрукьяну. Стратмор подошел ближе. - Чатрукьян мертв. - Да неужели.
Халохот быстро осмотрел стодвадцатиметровую башню и сразу же решил, что прятаться здесь просто смешно. Наверняка Беккер не настолько глуп. Единственная спиральная лестница упиралась в каменную камеру квадратной формы, в стенах были проделаны узкие прорези для обозрения, но, разумеется, никакого выхода он не .
Printed cartography. Digitization
Простите, сэр, вы, кажется, меня не… - Merde alors. Я отлично все понял! - Он уставил на Беккера костлявый указательный палец, и его голос загремел на всю палату. - Вы не первый. Они уже пытались сделать то же самое в Мулен Руж, в отеле Брауне пэлис и в Голфиньо в Лагосе. Но что попало на газетную полосу.
Немедленно. Казалось, на директора его слова не произвели впечатления. - Должен быть другой выход.