Copan for Android

Copan Pro for Android

Underhill Geomatics Ltd.

www.underhill.ca

Revised 2014/01/15

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Acknowledgements

Data, imagery and map info provided by MapQuest (http://www.mapquest.com), OpenStreetMap

(http://www.openstreetmap.org/), and contributors (http://creativecommons.org/licenses/by-sa/2.0/).

Portions of this software are copyright © 2010-2012 The FreeType Project (www.freetype.org). All

rights reserved.

Android is a trademark of Google Inc.

Differences between Copan and Copan Pro

Copan Copan Pro

Price Free $9.99

Banner Ads Yes No

Coordinate files 1 Unlimited

Coordinate file points 50 Unlimited

Dropbox files No Yes

SD card files No Yes

Export coordinates No Yes

Import coordinates No Yes

Print to file functions No Yes

Copan Windows file No Yes See Note 1 below

Available February, 2013 March, 2013

Note 1 – Coordinate files created by Copan Pro for Android may be used by Copan for Windows

software which is available on Underhill Geomatics Ltd.’s website. Copan Lite is available for free.

Likewise, Copan Lite coordinate files may be read and modified by Copan Pro.

Revisions

Copan and Copan Pro for Android

Version 1.23

1. Choice of input type (keyboard) for Cogo Azimuth and Distance fields added. See the Settings

function.

Version 1.20

2. State Plane / Geographic conversion functions added.

3. Ellipsoid option added to UTM / Geographic conversion.

4. Distance units option added. You may use metres, feet, or US Survey feet.

Copan for Android

Version 1.1f

5. Curve calculation function added.

6. Error in Coordinates Transform by points function fixed. The second point of the last point pair

was not interpreted correctly.

7. UTM/Geographic conversion function fixed and modified. The conversion functions were not

functioning correctly. The input screen has been modified to simplify input of North, South,

East, and West values.

Copan for Android

Copan for Android provides the land surveyor with the ability to perform survey calculations on an

Android device. Coordinates and data files may be stored internally, to a SD card, or to Dropbox cloud

storage.

The above images show the Copan main menu. The “COORDS” and “CALC” options brings up submenus

which prove more functions.

Summary of functions:

COORDS: New file, Open file, Edit, Close, Import, Export, Transform by Parameters, Transform by

Points, Reindex

CALC: CoGo, Curve, Map Check, Traverse, Map/Geographic

GPS

Map View

Dropbox Sign In/ Sign Out

Settings

Coordinates Menu

Copan stores points in coordinate files. Each point is identified by an unique number. Each point file is

indexed on the point number to allow for quick retrieval.

Coordinate File Use

Copan Pro - To perform Copan functions which uses points, a coordinate file must be opened. Use the

“Open file” function to open an existing file or “New file” function to create a new coordinate file.

Copan - A coordinate file is automatically opened when Copan is started. This coordinate file is limited

to 50 points.

Create New Coordinate File (Copan Pro Only)

Copan, when run, will create a subdirectory called “Copan”. Your data directories and files should be

placed in this subdirectory.

Copan Pro - Pressing the “New file” menu button will bring up this screen.

Copan – Only one coordinate file, automatically created by Copan, is allowed. This file is limited to 50

stored points.

Dropbox coordinate files

The recommended procedure for using Dropbox and coordinate files is to create the coordinate file first

on the Android device’s storage and then upload to Dropbox. You may open an existing Dropbox

coordinate file.

Copan handles coordinate file Dropbox operations by downloading a coordinate file from Dropbox and

storing it locally, working with the local file, and then uploading it back to Dropbox when finished with

the coordinate file. This is different from other data file operations in that there are no local copies of

other data files downloaded from Dropbox. In those cases, the data only exists in memory. This is the

same as for data files storage locally on your Android device.

To use Dropbox from Copan, you must have a Dropbox account and are connected to the Internet.

Select the “Dropbox Sign In” function from the Copan main menu and follow the directions. After you

have successfully signed in to Dropbox, the Dropbox directory will be available from the file chooser

screens.

You may navigate to subdirectories by tapping a subdirectory entry. When you have reached the

subdirectory in which you want to create a new subdirectory or file, tap the “NEW” button at the

bottom of the screen.

Next, select whether you want to create a new file or subdirectory.

In this example, we create a new subdirectory “ABC” in which we will create a new coordinate file.

Press “OK” to create the new subdirectory.

Next, tap on the entry “ABC” to get into that subdirectory. Then tap on the “NEW” button to create a

new coordinate file.

Select the “File” option and enter the name of a new coordinate file. In this case, we will create a new

coordinate file “ABC”.

Tap on “OK” to create the new coordinate file.

Coordinate File Edit

Copan Pro - A coordinate file must be opened in order for it to be edited. If you had just created a new

coordinate file, it will be opened unless you have closed it.

Copan – The default coordinate file is always open so it is not necessary to manually do this.

If there are points stored in the coordinate file, the first point will be displayed in the Coordinate Edit

screen.

Point Navigation

You may navigate to a point by using the “Go” button or by using gestures:

Next Point: short swipe to the left Previous Point: short swipe to the right

First Point: long swipe to the right Last Point: long swipe to the left

Coordinate File Edit Functions

GET will retrieve a point from the coordinate file. Enter a point number in the “Pt#” field and press the

“GET” button.

SAVE will save the displayed point to the coordinate file.

DEL will delete the displayed point from the coordinate file.

GO will display a submenu which allows the user to quickly retrieve the first, last, previous, or next point

in the coordinate file.

CLEAR will clear all the coordinate fields to blank.

View switches to a graphic view of the coordinate file.

The “All” menu button will display the graphic view

zoomed to its extents.

The “+” menu button will zoom in.

The “-“ menu button will zoom out.

Use your fingers to zoom or scroll:

Scroll – touch the screen and drag the view.

Zoom – use two fingers (thumb and finger) to zoom

in by pinching and doing the opposite to zoom out.

Coordinate Files and Copan for Windows

Coordinate files produced by Copan Pro are interchangeable with coordinate files produced by Copan

for Windows, another Underhill Geomatics Ltd. software package (available at www.underhill.ca). An

Android coordinate file may be copied to a Windows computer and may be used by Copan for Windows.

Likewise, a Windows Copan coordinate file may be copied to an Android computer and used by Copan

Pro. Only coordinate file are interchangeable between Android and Windows Copan software.

Coordinate File Transformation Functions

Points in a coordinate file may be transformed by rotating, scaling, and translating in that order.

Copan will perform the specified transformation on a range of points and save the transformed points to

a new range of points. The original points are not modified. There is also an option to perform the

inverse of the specified transformation.

The transformation parameters may be saved to a file for future use. Press the “FILE” button to access

the submenu which will allow you to save the displayed parameters or to retrieve saved parameters

from file.

In addition to transforming points by specified parameters of rotation, scale, and translation, Copan can

also compute the transformation parameters using pairs of points from the source and target systems.

The “Transform by points” function will compute the transformation parameters of similar points and

allow you to save the computed parameters to a file for use in the “Transform by parameters” function.

Enter pairs of similar points (comma separated), one pair to a line.

Press the “OK” button to compute and display the parameters. The calculated parameters may then be

saved to a file.

Export Coordinate File (Copan Pro Only)

Points in a coordinate file may be exported to a text file. The point data is in comma-delimited format

with one point on each line. You may choose the point fields to be exported and the order in which the

fields are printed. Points are exported from the coordinate file that is currently open.

The Coordinate Export screen when first opened:

The buttons with the field names indicate the fields that will be exported and the order that they will be

exported. You may change the fields that are exported and the order by pressing the buttons.

Here is an example of a configuration for point export:

In this case, only the point number, northing, easting, and elevation of each point will be exported.

Import Coordinate File (Copan Pro Only)

Points in a text file may be imported into a Copan Pro coordinate file. The point data must be in

comma-delimited format with one point on each line. Points are imported and added to the coordinate

file that is currently open.

The Coordinate Import screen when first opened:

Press the buttons to configure the input screen to match the fields in your text input file.

The following screen shows the Import function configured to import points with number, northing,

easting fields defined:

Reindex

Points in a Copan coordinate file are indexed on their point numbers. This enables Copan to retrieve

points from the coordinate file quickly, even as the number of points is large. The point number index is

stored in a separate file and on rare occasions, may become corrupted. If that happens, access to the

coordinate file points becomes unreliable. The “Reindex” function rebuilds the point number index file.

Calculation Functions

Copan offers the following calculation functions:

CoGo - perform inverse, traverse, and intersection calculations. Resulting points may be saved to the

coordinate file.

Curve – calculate circular curve parameters.

Map Check – Bearing / distance data for a closed figure may be checked for closure. The area for the

figure is also computed.

Traverse – Field traverse observations may be calculated. Closure errors are computed and the traverse

may be balanced.

Map/Geographic – transformations between UTM or State Plane and Geographic coordinates are

calculated.

CoGo

The Cogo function may access the coordinate file to retrieve or save points so please open a coordinate

file before proceeding.

Select Solution button is used in intersection calculations where there are two possible solutions to pick

the appropriate point.

View button will graphically display your calculations.

Clr View button removes the temporary Cogo working lines from the display.

Clear will clear the Cogo input fields.

Save Pt. will place the calculated coordinates in the Coordinate File Save Point screen.

Calculate is used to perform the calculation when you have filled the appropriate input fields.

Copan CoGo uses a two line screen to accept user input and display results. Enter the known quantities

and Copan will calculate the unknown parameters if possible.

For example to calculate the inverse from Pt. 1 to Pt. 2 (points stored in an opened coordinate file),

enter the point numbers while leaving the Azimuth and Distance fields blank.

Press the “Calculate” button to display the results.

Press the “View” menu button to show the calculation graphically.

“All” menu button will display the graphic view zoomed to its extents.

The “+” and “-“ menu buttons will zoom in and out respectively.

Use your fingers to zoom or scroll:

Scroll – touch the screen and drag the view.

Zoom – use two fingers (thumb and finger) to zoom in by pinching and doing the opposite to zoom out.

How to Use the Two Line Cogo Input Screen

The two line input screen may be used to perform inverses, traverses, and various intersection

calculations. The logic behind the two line input system is that any fields left blank will be calculated if

enough data fields are filled.

Here are the combinations (x denotes filled fields):

From Pt Azimuth Distance To Pt

x x x x Traverse

x x Inverse

x x x Azimuth/Azimuth Intersection

x x

x x x Azimuth/Distance Intersection

x x

x x x Distance/Azimuth Intersection

x x

x x x Distance/Distance Intersection

x x

Cogo Azimuth and Distance Input Options

Points stored in the coordinate may be used to define an azimuth or distance by simply specifying the

point numbers in the Azimuth or Distance input fields. Two points are required to define an azimuth or

distance.

The form of the two point input is: ptNumber,ptNumber or ptNumber?ptNumber.

For example, to enter an azimuth or distance between points 1 and 2, enter: 1,2 or 1?2.

Distance Input Options

Using Stored Points

To use the distance from stored Pt#1 to stored Pt#2, enter:

1?2

or

1,2

Distance Arithmetic

Distances may be entered as a simple arithmetic expression consisting of two terms.

Arithmetic operations: add (+), subtract (-), multiply (x or *), divide (*)

For example:

To enter the distance of 4 times the distance from points 1 to 2: 1?2*4

Azimuth Input Options

Using Stored Points

To use the distance from stored Pt#1 to stored Pt#2, enter:

1?2

or

1,2

Adding Multiples of 90 Degrees

You may also modify the azimuth between 2 stored points by adding a multiple of 90 degrees using .1,

.2, or .3. For example:

Given 2 stored points 3 and 4 with azimuth of 10⁰,

3,4.1 = 10⁰ + 90⁰ = 100⁰

3.4.2 = 10⁰ + 180⁰ = 190⁰

3.4.3 = 10⁰ + 270⁰ = 280⁰

Azimuth Arithmetic

Azimuths may be entered as a simple arithmetic expression consisting of two terms.

Arithmetic operations: add (+), subtract (-)

For example:

23.3000+10.1025 will be interpreted as 33.4025.

Curve

Circular curves may be calculated for a variety of conditions. You may define intersection points or

curve points in conjunction with other curve parameters and Copan will calculate the unknown

parameters. The Copan input screen is set-up to let you enter the known data and the unknown data

will be calculated if possible.

You may calculate circular curves based on actual

points on a plane or calculate the parameters of

curves not tied to any specific location.

To calculate actual curves at a location, enter point

numbers of coordinate file points or enter point

coordinates. The “BC”, “PI”, “EC” buttons may be

pressed to changed their designations. The

possible values are:

PI – Intersection Point

BC – Beginning of Curve

EC – End of Curve

PC – Point on Curve

Fill in the fields with known data and Copan will calculate the curve if enough information was entered.

Here is an example:

In this example, the curve to be calculated is defined by three points from the coordinate file which are

intersection points for a curve alignment and the curve is to have a radius value of 40.

The results of the curve calculation:

The calculated points may be saved to the coordinate file by placing the cursor in one of the point fields

(Pt#, N, or E) and then pressing the “Save Pt” button.

Copan Pro Only – Curve data and results may be saved to a file. An additional menu choice, Print to file,

is available.

The results shown graphically:

Map Check

The Map Check function will calculate the closure of a closed lot given the azimuth / distance data of

each side. Circular curves are supported. The area of the lot is also calculated.

In addition to the menu items shown at the bottom of the Map Check screen, pressing the computer’s

“Menu” button will display an additional menu button, “Start Pt”. This function will let you specify the

start coordinates for the map check traverse. Otherwise, the start coordinates will default to N10000,

E10000.

Selecting the “Insert” menu function will open a new input screen for the Map Check data. This screen

is used to input each line of your map traverse.

The first line of the Map Check data should be just the start point number with no Azimuth or Distance

data.

This shows the first line of the Map Check data.

The “Insert” function will insert a line of data before the cursor position in the Map Check data display

screen (shown above). Use your finger and touch the screen to position the cursor. The cursor is also

used to indicate the line to Edit or Delete.

Each point in the Map Check data is classified as:

Corner

BC – Beginning of Curve

EC – End of Curve

C – Center of clockwise curve

CC – Center of Counterclockwise curve

POC – Point On Compound curve. This is an End of Curve which is also a Beginning of Curve. (You may

need to scroll the list to see this selection as is the case in the illustration below.)

This is an example of a typical Map Check traverse line:

This is an example of a complete Map Check data set:

The Map Check data may be saved to a file for later use.

Calculating the above data yields the following results:

Copan Pro Only – Map Check data and results may be saved to a file. An additional menu choice, Print

to file, is available.

Pressing the “Show” menu button will display the graphics view of the calculated data:

“All” menu button will display the graphic view zoomed to its extents.

The “+” and “-“ buttons may be used to zoom in and zoom out.

Use your fingers to zoom or scroll:

Scroll – touch the screen and drag the view.

Zoom – use two fingers (thumb and finger) to zoom in by pinching and doing the opposite to zoom out.

Traverse

The Traverse function is used to calculate a field traverse consisting of measured legs comprising

horizontal and vertical angles and slope distances measured by a survey instrument.

The Traverse function has a number of options:

File – functions to manage traverse data files

Setup – input and edit traverse setup data including survey information and instrument parameters

Insert At Pt – add At Point data

Insert To Pt – add To Point data

Edit – edit a line of data

Del – delete a line of data

Calc – calculate the traverse

Balance – balance the traverse

Save Pts – save the calculated points to the opened coordinate file

This is the view of the data from a simple survey:

The Setup screen is used to enter/edit survey information including instrument parameters that will be

used in the traverse calculation.

Traverse data consists of “At” points and “To” points. An “At” points defines an instrument setup.

Pt# - point where the instrument is set-up on

HI – height of instrument

Ref. Pt# - number of point in coordinate file backsighted on

Ref. Az – backsight azimuth

NOTE: Use either “Ref. Pt#” or “Ref. Az”, not both.

HCR: - horizontal circle reading on backsight

The above shows a “To Pt” input screen. It is used to input or edit a foresight to a point. The “To Pt”

may either be the next instrument setup or a sideshot (which will not be occupied).

The “Another” button allows multiple sideshots to be entered without going back to the previous

screen.

Closing Angle

If you wish to include a closing angle in your closed traverse, add an “At” point after your traverse to

your last point. Then, add a “To” point to your initial reference point or azimuth. Leave the Distance

blank and this line will be interpreted as an angle only.

Entering or Editing Traverse Points

Traverse points are entered or edited by positioning the cursor at the line the traverse data display

screen and then pressing the “Insert At Pt”, “Insert To Pt”, “Edit”, or “Del” button.

Calculating the Traverse

Press the “Calc” button to calculate the traverse. The calculated point coordinates, misclosure, and

relative precision are displayed.

Pressing the “Show” button in the Traverse Results screen will display a graphical view of the traverse.

The graphic view may been scrolled by dragging the image with your finger and zoomed in and out by

using your thumb and index finger. You may also use the “+” and “-“ buttons to zoom in and out.

Copan Pro Only – Traverse data and results may be saved to a file. An additional menu choice, Print to

file, is available.

Balancing the Traverse

Errors in the closure of your traverse may be distributed amongst the survey legs by balancing. Copan

offers three methods of balancing:

Compass

Crandall or

Transit

After balancing the traverse, the points are recalculated and the results are displayed.

Copan Pro Only – Traverse data and results may be saved to a file. An additional menu choice, Print to

file, is available.

Save Traverse Points

Calculated traverse points may be saved to the Copan coordinate file.

Points are saved to the coordinate file with the option to overwrite or not to overwrite existing points

with the same point number as the traverse points.

The number of points actually saved to the coordinate file is displayed.

Map Plane / Geographic Converter

The Map Plane / Geographic Converter may be used to convert from UTM or State Plane coordinates to

Geographic (Latitude / Longitude) or from Geographic to UTM or State Plane coordinates.

Geographic to UTM

Press the button to the right of the “Latitude” text input field to toggle between “N” and “S”.

Press the button to the right of the “Longitude” text input field to toggle between “E” and “W”.

Set the “Zone” text input field to blank if you wish the calculate UTM coordinates in the standard zone.

You may fill in the field if you wish to have UTM coordinates calculated for a specific zone.

UTM to Geographic

Press the button to the left of the UTM Northing text input field to toggle between “N” and “S”.

Latitude and longitude may be entered as degrees in decimal format or in degrees minutes seconds

format.

Fill in either UTM or Geographic values, select “To Map” or “To Geographic” , and press the “Convert”

button to perform the conversion. UTM coordinates may be saved to the opened Copan coordinate file.

Geographic to State Plane

Enter the latitude and longitude in the spaces provided.

Set the conversion mode to “To Map”.

Press the “Convert” button.

Use the “Settings” function from the main menu to change the State Plane parameters.

State Plane to Geographic

Enter the northing and easting in the spaces provided.

Set the conversion mode to “To Geographic”.

Press the “Convert” button.

Use the “Settings” function from the main menu to change the State Plane parameters.

GPS Function

The GPS function displays location as latitude/longitude and UTM or State Plane coordinates. The

mapping coordinates are converted from the latitude and longitude.

Use the Settings function to set the mapping coordinate system (UTM or State Plane), ellipsoid/datum,

zone, and units.

Also displayed are speed and azimuth.

The point displayed may be saved to the opened Copan coordinate file as mapping coordinates.

Map View Function

The Map View function accesses the online MapQuest application and uses Open Street Maps data.

Internet access is required. GPS is also used to set the initial map view.

The Map View functions are:

Cross Hairs On / Off - toggle the Cross Hairs on or off. The Cross Hairs may be used to digitize points.

Go To Point – centre the map on the entered latitude and longitude.

Follow Me On / Off – toggle on or off the option for the map to centre on the device’s GPS location.

Save Point – save the digitized point to the Copan coordinate file. Once the point is digitized, the

Geographic / Mapping Convertor is called to calculate a plane coordinate which may be saved.

Satellite Image On / Off – toggle the satellite imagery on or off.

Dropbox Online File Storage (Copan Pro Only)

If you have Internet access and have a Dropbox account, Copan can use Dropbox to store Copan files. In

your Dropbox directory you will have a /Dropbox/Apps/Copan directory. You make use this Dropbox

directory from within Copan to save coordinate and data files.

Most Copan file operations that are performed on your local storage may be performed on the Dropbox

directory. The exceptions are Copan coordinate file operations which must be handled a little

differently.

In general, Copan data are created in memory and then saved to a file. Changes made to data in Copan

are not saved to file unless the user chooses to. Copan coordinate files do not follow this model and

thus, must be handled differently with respect to Dropbox.

A Copan coordinate file is updated every time a change is made to a saved point. Additionally, the point

number index file is updated frequently. This mode of operation is not compatible with the Dropbox file

upload and download functions as it would slow down Copan and consume Internet bandwidth.

The recommended procedure for using Dropbox and coordinate files is to create the coordinate file first

on the Android device’s storage and then upload to Dropbox. You may open an existing Dropbox

coordinate file.

Copan handles coordinate file Dropbox operations by downloading a coordinate file from Dropbox and

storing it locally, working with the local file, and then uploading it back to Dropbox when finished with

the coordinate file. This is different from other data file operations in that there are no local copies of

other data files downloaded from Dropbox. In those cases, the data only exists in memory. This is the

same as for data files storage locally on your Android device.

To use Dropbox from Copan, you must have a Dropbox account and are connected to the Internet.

Select the “Dropbox Sign In” function from the Copan main menu and follow the directions. After you

have successfully signed in to Dropbox, the Dropbox directory will be available from the file chooser

screens.

Settings

Angle mode

Copan may be configured to interpret azimuths and angles either in degrees (in degrees minutes

seconds format) or grads (gons). Use the settings function to set this option.

Degrees – Enter angles in ddd.mmss format. For example, enter 349 degrees, 45 minutes, 10 seconds as

349.4510. You may also enter bearings in the quadrantal format. For example, N30.5332E.

Grads (Gons) – Enter as a decimal number.

Units

Units determine how coordinates are interpreted when converting from geographic (latitude, longitude)

or to geographic. The units available are: metres, feet, and US survey feet.

Coordinate system

You may choose between UTM or State Plane coordinate systems.

Ellipsoid/Datum

In the UTM system, the following ellipsoids are available:

WGS72

WGS84

GRS80

CLARKE 1866

CLARKE 1880

ATS77

NWL 9D

INTERNATIONAL

BESSEL

KRASSOVSKY

EVEREST

AUSTRALIAN N.

AVG.TERRESTRIAL

In the State Plane coordinate system, you may choose between t hese datums:

NAD27

NAD83

Zone

If you have selected the UTM coordinate system, you may enter a zone or leave it blank. If left blank,

then the conversion from geographic to mapping will automatically calculate the zone.

If you have selected the State Plane coordinate system, you must select a zone.

Cogo Azimuth/Distance Input Type

The Azimuth and Distance fields in the Cogo function must be capable of receiving the numerals 0 to 9

plus a number of symbols to make simple arithmetic possible. Android devices have keyboard

implementations that vary from device to device.

This setting allows you to choose the keyboard which suits you the best. The options are:

numberDecimal

phone

text

In general, the phone option will work well.