LPanel - Markers   Polys   Group
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(no zero) [ZoomLock]

Poly-A len: km   mi.
Poly-A brg: (CW/DN)    A
Km   mi.

Poly-B len: km   mi.
Poly-B brg: (CW/DN)  BNY
Km   mi.

Last yellow marker in PolyPocket location
PolyPocket is empty
Red marker A location
Red marker A location here
Gold marker V location
Gold marker V location here
To make a mutual location change of the map’s center, circle center, and polylines’ vertex: enter latitude/longitude coordinates into the “Group Lat/Group Lng” input boxes below—then click on the blue “GR” (Group Relocate/Clear PolyPocket) button located to the right of the “Group Lat” input box. This will achieve an exact latitude/longitude map placement.

You can also type a “location name” into the automated “Quik Search” input box below. “Quik Search” takes you to the nearest “street” or “location” address stored in the Google Maps database—as opposed to the exact latitude/longitude map placement achieved via the “Group Lat/Group Lng” input boxes.

Below the “Quik Search” input box you will see the name of the nearest “street” or “location” address the map has been moved to whether you utilize the “Quik Search” input box or achieve exact latitude/longitude map placement via the “Group Lat/Group Lng“ input boxes. Above the “Quik Search” input box you will see pending destinations whenever a change occurs to the “Group Lat” or “Group Lng” input boxes.

You can traverse large swaths of terrain across the globe while “zoomed-in” on your Google map using Mini Map.

The blue “TY” button below (the “TY” button may be hidden as you read this) and the “TM” button below can also be used to make an exact latitude/longitude mutual location change. (See Instructions for details.)

Click the yellow “DI” button in the upper-right of the Google map for an introduction, and an instructions link.

Poly-A polyline midpoint location (yellow/aqua)
Poly-A Polyline midpoint location here

Important Note: Changing either of the above “Group Lat” or “Group Lng” location-values will automatically change the “Centered Red Marker Latitude/Clicked Yellow Marker Latitude/Pending Centered Red Marker Latitude,” “Centered Red Marker Longitude/Clicked Yellow Marker Longitude/Pending Centered Red Marker Longitude,” “Circle Latitude,” “Circle Longitude,” and “Poly-A,” “Poly-B,” and “Polys-V” marker latitude/longitude input-box values to the same respective changed “Group Lat” and/or “Group Lng” location-value(s)—and the “Circle Radius” and “Map ZL” (map zoom level) will be reset to their default values.

Zooming Exception: If the green radio button in the “Polys” section of the LPanel has a black center, or the “Y” button on the Mini LPanel is colored yellow, this means you have chosen to have markers “A,” “B,” and “V” shown concurrently on your device screen—and therefore the “Map ZL” (map zoom level) will be auto-set accordingly.

If for whatever reason you decide to move or resize the faded-white circle on the Google map using your cursor after changing a “Group Lat” or “Group Lng” location-value, the faded-white circle will remain at that moved-to location, at its resized radius, when you then click on the blue “GR” (Group Relocate/Clear PolyPocket) button in the “Group” section (above), the “Update Map/Clear PolyPocket” button (in the “Markers” section) or the yellow “U” (Update Map/Clear PolyPocket) button (in the “Polys” section).

Typing a location name into the “Type a Quik Search Location” input box, and then clicking on one of the options listed on the dropdown menu that displays, will also automatically change all of the input-box values mentioned above...but will in addition, 1.5 seconds later, move the Google map to your new chosen location.

It is paramount that you complete your current polyarc-plotting project before making a change to the “Group Lat” or “Group Lng” input-box (or click on a Quik Search dropdown menu option), as all of your current polyarc-plotting settings will be lost when either of the “Group Lat” or “Group Lng” input-box values are changed, and you then click on the blue “GR” button (above), the “Update Map/Clear PolyPocket” button (in the “Markers” section), or the yellow “U” button (in the “Polys” section).
In addition to being able to set the three markers’ “A,” “B,” and “V” latitude/longitude values by moving the markers around the Google map with your cursor, you can manually set precise marker locations using the input boxes on the “Upd” Updater pop-up panels in the “Polys” section (the Updater pop-up panels can be opened by clicking on the green “A” and “B” buttons in the “Polys” section), or by using this Geo Midpoint Bearing/Distance Calculator web page, and then transferring the output Decimal degrees latitude and longitude values from the Geo Midpoint web page to the appropriate marker’s latitude and longitude input boxes on the LPanel. That is, should you wish to use a different “Earth model” for calculating each yellow polyline’s path along the Earth’s surface than is used on this web page’s Google map layer. [Google maps uses the WGS84:3857 Earth model.] (“Earth models” and other related topics are expounded upon on the Geo Midpoint website).

You can also avail yourself of this Earth Point web page, that converts a variety of coordinate formats into Decimal degrees.

Note: Here is information about the four Google “map types”, as relates to the “Map ZL” zoom-level feature:

  • 1) Hybrid map type
    (Zoom level range: 0 > 20)
  • 2) Satellite map type
    (Zoom level range: 0 > 20)
  • 3) Terrain map type
    (Zoom level range: 0 > 21)
  • 4) Roadmap map type (Map)
    (Zoom level range: 0 > 21)

Note: In some areas, “Hybrid” and “Satellite” map types may not “zoom-in” past zoom-level 19.

You may enter a “zoom level” manually into the “Map ZL” input box and then click outside the “Map ZL” input box to update the Google map...preferably when the PolyPocket is empty, as any code in the PolyPocket is cleared whenever the “Update Map/Clear PolyPocket” button, or the yellow “U” button, or the blue “GR” button gets clicked.

Important Browser Information:

This Google map web page works best on browsers that are “matchMedia” capable.

Here is a browser compatibility chart with a list of such browsers.

This Google map web page is “mobile-friendly” down to a “320x480-pixels” screen-size. But, due to the nature of maps, the larger the screen this web page is viewed on, the better. And browsers that are not “matchMedia” capable (such as Internet Explorer 9) will not receive automatic “zoom-level” adjustments at smaller screen sizes that optimize the map’s appearance.

Mini LPanel Length/Bearings (Read-only)
Pocket PolyArc PolyPocket
Click on map to obtain 'Lat-Lng' coordinates

It’s the Pocket PolyArc, for Google API Maps! ... with ZoomLock, Midpoint Polyline, and Location Popup Window!

The Pocket PolyArc creates extremely precise, pre-formatted 'polyarc' array-code for your Google API Maps...in mere seconds!

And clean-up of errantly-placed map markers is a snap! Just click the 'Remove Marker and Code Line' button on the upper-right of your computer screen, and the last map marker that you’ve generated on the Google API Map will be removed from the map, along with the marker’s associated stretch of red 'polyarc,' and the marker’s pre-formatted 'latitude-longitude' array-code. It’s that easy!

The pre-formatted 'latitude-longitude' array-code for each marker is generated in the 'Pocket PolyArc PolyPocket' that appears on the right-hand-side of your computer screen when you start adding markers to the map.

If you need to remove more than one map marker (and that includes the marker’s stretch of red 'polyarc' on the map, and associated pre-formatted 'latitude-longitude' array-code), keep clicking the 'Remove Marker and Code Line' button until you are satisfied with your polyarc’s course.

Complete instructions here.

Note: The “ZoomLock” feature keeps the Google map at your desired “Zoom Level” after you have clicked the “Update Map/Clear PolyPocket” button! The “Midpoint Polyline” is discussed in the linked-to instructions Example 3. The “Location Popup Window” is discussed on the linked-to instructions Instructions page, under the “Group Section” heading, and is demonstrated in the linked-to instructions Example 4.

Try the updated, mobile-friendly Pocket PolyLine 2 polyline maker when you need to plot straight lines!