Selecting images for a city or town
Steps 1 and 2 -
Select community from the drop down list and click "Map the Tiles" button (located underneath the community drop down list) to display the map.
Note: If using Internet Explorer and the map viewer does not open, try going to Tools > Options > Advanced tab and uncheck the box under HTTP 1.1 settings for "Use HTTP 1.1 through proxy connections".
Also in Internet Explorer, go to Tools > Options > Security tab and under Downloads, click Enable for 'Automatic prompting for file downloads'. This is REQUIRED for the 'To Spreadsheet' function to work.
A map will appear displaying the selected tiles in red and the community in blue. A list of the tiles will appear in the Selection tab on the right.
Click on 'To Spreadsheet' located on the bottom right of the right side selection tab.
NOTE: The different shades of the tiles indicate the year of photography and available resolution.
Click on the Legend tab located at the top center in the right window for the symbols and to turn layers on and off.
Roads, community names and tile IDs will appear as you zoom in.
Step 4 -
Download and open the spreadsheet (the dialogs appear different in different Web browsers. Shown are the dialogs for Microsoft Internet Explorer and Mozilla Firefox). Descriptions of the spreadsheet columns are found further down on this page.
Selecting any Images
Open the MassGIS Data Download Viewer and refer to the following guide for details. As shown above, once your tiles are selected click on 'To Spreadsheet'
When the viewer first opens, you will see the entire state. Use the zoom and pan tools to refine the geographic extent.
Once zoomed in to your area of interest, use the options shown in the following picture to select and access your desired imagery.
Once you download and open the spreadsheet, examine its columns. The descriptions below explain how you may use the spreadsheet to obtain the imagery.
Column A liats the 8-digit image tile number.
Column B lists the year in which the image photography was acquired.
Columns C and D list the direct Web links to the image files.
The free WGET utility may be used to download multiple files from a Web site.
Download and install WGET (Windows setup .exe). Refer to the software's documentation for installation instructions and command syntax. The main WGET Web site is http://www.gnu.org/software/wget/.
Then copy and paste the text (except the header line) in columns E and F into a command prompt and the files will be retrieved to your local current folder.
You also may paste the WGET commands into a Windows batch file (a text file with .bat extension) and run the file if you need to automate the process.
The free URL2FILE utility also may be used to download multiple files from a Web site.
Download and install URL2FILE. Refer to the software's documentation for installation instructions and command syntax.
Then copy and paste the text (except the header line) in columns G and H into a command prompt and the files will be retrieved to your local current folder.
You also may paste the URL2FILE commands into a Windows batch file (a text file with .bat extension) and run the file if you need to automate the process.
For assistance using the map viewer to download imagery, contact Michael Trust at firstname.lastname@example.org.