Friday, 19 February 2016

Projection and Coordinate Systems

The above map "Projections and Coordinates of Florida" was created using both ArcCatalog and ArcMap with the help of a cntbnd shapefile. To have received such a beautiful map, ArcToolbox was used to re-project the data-sets. After the data-sets were manipulated, both maps that were displayed and were altered to sit side b side to show their differences.  An extra field was added to the attribute table to insert a given area, where it was expressed by using the calculate geometry box, this was done for both maps. To indicate the counties of interest: Alachua, Escambia, Polk and Miami-Dade, they were displayed by running a SQL query. Their respective area value was also indicated by running another SQL query. This was done for both maps where the difference in area was seen.

Friday, 12 February 2016

GIS Cartography

The world of GIS is quite amazing. This week I learnt to make maps with cartography. To make these amazing map, ArcCatalog and ArchGIS were both used. Where the ArcCatalog helps by providing an integrated and unified view of all data files and databases, and ArcGIS documents available to ArcGIS users.

First off ArcCatalog was open to review the given datasets of eight (8) data layers. ArcMap was then open while ArcCatalog was still running in the background. This new document was saved as project /MXD and the properties title of this document was changed to Mexico, author Janel McNab.

NOW THE FUN PART BEGINS!!!

From ArcCatalog the datasets World_Countries, Mex-boundary and Americas_Admin were dragged and drop over to ArcMap. This first map will illustrate the boundaries of Mexican states. This was achieved by selecting attributes where an SQL query was run to select the country of Mexico. Thereafter a new layer was created to replace Americas_Admin. The template map was given labels to identify the different features, the color was edited, and other map features were inserted such as North arrow, scale bar, scale text, legend and title. But uniquely a dynamic text was edited and the author and date were inserted. A few more changes were done to re-naming of content and the finished product was saved and exported. Map one(1) seen below.
The second (2nd) map continues from the first map. The remaining layers mex_rails, mex_rivers, mex_roads, and mex_urban were added. Mex_rivers layer was categories to view only primary and major water systems. This was also done for the mex_roads layer to only display Federal. Advance labeling was done to themex_urban layer, where an SQL query was carried out to indicate all urban areas with more than a million people. The labels were converted to annotations so that the labels could be edited. An inset map was added to indicate the exact location being expressed. The map was rearranged and exported. The map of Mexico can be seen below, Map 2. 

The third map of this exercise is a continuation of the first and second map. This map expresses the layer of mex_elev, elevations using a stretched symbology. the color ramp was edited and displayed the entire country of Mexico to show the elevation. This map can be seen below, Map 3.

Exploring the world of GIS with the use of Cartography!!

Thursday, 4 February 2016

My First World Map- Population for 2007

World Map: Countries and Cities Population for 2007
The map above was created using ArchMap 10.2.2. Where ten (10) files that make up 2 GIS layers called shapefiles were imputed to display the map. The map was modified where the popuation for 2007 was indicted and the color was change to show the different ranges of population, alos a north key, scale bar, scale text, title and key was inserted to enhance the look and understanding of the map. So my end product is the beautiful map above indicating the world's population for 2007.