Cogo4Android is a coordinate geometry (cogo) program for tablet pcs and smartphones that run the Android OS It is patterned after QuickCogo, the desktop version and the other 2 handheld versions (palmcogo and mobilecogo). The software was written using Basic4Android and tested on a Coby Kyros 7015a tablet PC running Android 2.1 but it will work on any device running Android 1.6 and above. It has also been installed on a Cricket smartphone. The program offers 30 separate cogo routines containing solutions to many of the common problems surveyors confront daily. The various routines work interactively because they share the data files created by each other. For example, the same points and coordinates created with the bearing-distance routine can then be used in the stakeout or any other routine. The interface is similar to my other versions where the user works from a menu of buttons, each of which contains a link to a particular cogo procedure related to a specific problem. Points with their associated data are maintained in files either created within the software or imported from external sources like another surveying software program. These files are stored internally on your device or on an sd card in the device. Many of the routines permit creating an additional file containing your inputted data together with the results. This information can later be transferred to your computer for further manipulation, including printing. As tablets and smartphones are improved.and expanded, they certainly become a viable alternative to laptops and even PCs for convenience in the field or elsewhere.
There are free evaluation versions for the 3 common devices currently being used, namely phones, 7" tablets and 10" tablets. Although it may not be suited for meaningful tasks it will demonstrate how the software works so you can assess its usefulness for you. It is fully interactive but has the restriction of accepting input of only whole numbers (no decimals) for lengths, distances and coordinates. There are no limitations in the purchased version. To obtain the zip file containing the apk file for the evaluation, together with the instruction manual in both 'doc' and 'pdf' formats, click the applicable link below:
PHONES This one may also accommodate a 7" tablet
7 INCH TABLET
10 INCH TABLET
If you only want to read through the manual, you may download it in 'doc' format Here.
PLEASE CONTACT ME with your feedback if something doesn't work or you have suggestions for improvement.
The cost for this software is $29
To purchase go to THIS LINK
There is no additional charge for multiple devices so long as you are the only user
These are the routines currently available in the program:
Angle-Dist traverse with closure information
Find angles between intersecting lines
Area of a close figure
Bearing/azimuth traverse
Inverse between points
Inverse between coordinates not defined by points
Cul-de-sac calculations
Curve calculations given 2 known elements
Curve inverse between points on a curve
Ability to delete selected or all points or an entire file
Edit the database
Grades for stations along known slope
Import and export compatible text files from other sources
Input data like points and coordinates
Calculate points of intersection of line-line,line-curve and distance-distance problems
Another line-line routine for intersecting any 2 lines defined by point numbers
List points and their data
Layout points on a known line from another set up
Map check routine for determining closure and area of a parcel
Multi-inversing for a group of points
Offset routines for perpendicular and parallel lines
A simple plotting routine to see the configuration of the figure defined by points and lines
Radial routine for finding many points by angle-distance-vertical angle if necessary
Resection routine for finding the location of a point using 3 known points and 2 angles A reverse offset routine that allows setting the offset distance from a line
A road curve procedure which finds the curve information both sides of a road where the p.i. is known
Rotate points by difference in bearings
Stakout points from an occupied point sighting another, turning angles and measuring distances
Change coordinates by a specific amount (translate)
Calculate elevations for a vertical curve
Find the radius and the location of the radius point given 3 points on a curve
Many of the routines have the ability to produce a text file that can be transferred to a computer for printing.
The instruction manual in text format can be found by tapping the "View Manual" button on the Home screen
The screens were designed to display a sky blue background with white lettering. If yours shows something else that makes it difficult to read please contact me.I will continue to improve the software based upon your feedback. Please contact me quickly if there is a problem with any of the routines and I will try to correct them immediately. The manual has installation instructions and details about each of the routines. I suggest you read through them before using the program. Please report your experience if things don't work as expected. Thank you.
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