Co-ordinate Calculations for the
Pocket PC
From
Main Screen
Pocket S-Calc is a series of
programs designed for the land surveyor, civil engineer or anyone else who has
the need for creating and processing co-ordinate data.
Using S-Calc on your Pocket
PC you will be able to transform and rotate
co-ordinate systems from one base to another, instantly perform setting
out (inverse) calculations on data
produced or pre-loaded into the Pocket PC.
S-Calc will also calculate co-ordinates along road straights and curves,
again storing the data generated to the Pocket PC for plotting or calculations.
There is also a function for calculating co-ordinates from drawings, all data
generated can be stored for future reference, the file handling capabilities
built in to S-Calc will help to avoid repetition in site calculations which are
the cause of many errors.
Installation to Pocket PC
Once you have downloaded the
Pocket S-Calc.zip file extract the contents to a separate folder, ensure that
your pocket pc is connected to the desktop. Run setup and the installation
process will begin. Setup should interrogate your Pocket PC and install the
correct files for your processor, if this does not happen do the following
procedure.
On the Pocket PC from the
start menu select Settings, System, About. You will see information about the
processor, for instance on the Ipaq it is ARM SA1110.
Unzip the contents of the
zip file which corresponds to your processor type into the same directory as
setup and run setup, the installation should now proceed.
Any problems email us
Once you have installed the
programme you can start it by going Start-Programs-S-Calc, if you want to add a
shortcut to your start menu go Start-Settings-Personal-Menus and check the box
beside Pocket S-Calc.
Select the S-Calc program
from either the start menu or programs and you will see the following screen.
You can either enter a serial number if you have purchased the product or choose to continue with the trial version.
Once you have purchased S-Calc this screen will no longer appear. We have tried
to make the trial version as functional as possible without continuous nag
screens etc. The only limitations are that you can load 25 data points for
processing and the file save function is disabled.
Main Screen
The main screen of S-Calc
presents you with a number of options.
Unless you are going to
either calculate co-ordinates or perform road calculations you need to open a
file for processing, select Open File….
The file highlighted here is
“before” (included with the trial version) ,
select it and you are taken back to the main screen .
The data from the file
“before” is shown on the main screen. You can now perform calculations on this
data.
To transform these
co-ordinates to another base, in this case to make a site grid square to north
for ease of set out operations select Transform Co-Ordinates. You will be taken
to the screen shown below.
To transform the co-ordinate
system first select the base points you wish to use. This can be done by using
the forwards and backwards buttons to scroll through the points in the file or
by entering a point number in the cell beside either Base Point A or Base Point
B and pressing the Select button, the co-ordinates of the points will be
displayed in blue text beneath the point number. Here we have selected points 3
and four as the bases.
Next enter the new
co-ordinates for these two points in the New CoOrdinate input area. Base point
A has been given new values of E=1000 , N=2000, Base point B has been given new
values E=1000, N=2037.061.
Press Accept to continue and
a check dialogue will be shown as below.
The whole circle bearing and
distance between the original and proposed values will be displayed. If the
distances are the same as in the 37.061 shown here the tranformation will work.
You can either accept this or press change to go back and revise the input
values. Press Accept to continue, the following screen will be shown and you
are prompted to save the re-calculated data to file.
The filename entered here is
“After” which will be saved as a .csv (see file types) to the Business
directory on the Pocket PC. Press OK to continue.
You are taken back to the
main screen where the original data is still displayed. To view the new data
select File Open as before and open the file you just saved.
The transformed co-ordinates
are displayed on the screen. You can
now calculate setting out (stake out) values for this data by pressing the Set
Out button.
To calculate setting out
(stake out) data, once you have selected the Set Out option from the main
screen you will be presented with the following display.
To select the occupied point
either scroll through the points in the file by using the arrow keys on either
side of the select button, enter a point number into the cell beside the Occ
Point No prompt or enter values into the cells beside the East and North
prompts. Press select to confirm your choice, if you have entered a point number
the co-ordinates of that point will be shown. The First and Last buttons will
take you to the first or last points in the file.
Press the Calculate button
and the whole circle bearing and distance to each point will be displayed as
shown below.
Here we have selected point
no 3, our original base point as the occupied point. The bearings and distances
to all the other points are shown, scroll down to see more. To use a different
point as base simply select it and press calculate and the new bearings and
distances will be shown.
To finis and return to the
main screen press Quit.
To calculate co-ordinates
select that button from the main screen, you will be taken to the display shown
below.
Use the Browse button to
select a file for the calculated output data.
Here we have chosen to call
the output file Newcoord. Press OK to continue.
Enter the Co-ordinates of
the point where your calculation will commence in the green area of the screen.
Pressing Reset will clear all the values in this area. Here we have entered our
start point as Point No 1, East 1000, North 1000, Level 0.00 and Remark (used
for descriptive references to save to file) as Start.
In the turquoise area you
enter the distance and bearing to your next required point, pressing Calculate
will perform the calculation and show the co-ordinates produced in the white
box below the input area. If you choose to save the calculated point to file
press Save, the point will be written to file and the Points Saved cell will
increase by one to show you how many points you have saved thus far. The New
Point Ref cell will also increase by one, you can change this value if you do
not wish to use the point number provided.
Pressing the KbdToggle
button will turn the keyboard on and off for data entry as shown below.
When you have finished
calculating co-ordinates press quit to return to the main screen where you can
perform setting out (stake out) calculations on the saved data.
To calculate straight and
curved elements for road design or stake out select the Road Calcs button from
the main screen. You will be presented with the display shown below.
Input the road geometry in
the cells adjacent the relevant input prompts, in this case the screen shows
the requested input for a radial curve. Note that bearings must be in the
format of DDD.mmss. Press Calculate and the calculated values will be shown
below the input area. Start Chainage is the point of beginning of the element
in metres or feet, the end chainage is the end of the required element in
metres or feet, the increment is the required distance between the start an end
chainages, also known as stationing.
Note that point numbers have
been added for reference. The display of the output data is separated by commas
due to space restrictions on the Pocket PC screen. You can scroll through the
output using the slider bar on the right.
To save the data to file
press the Save To File button and follow the instructions outlined previously
to save the data. You can then return to the main screen to perform setting out
calculations on the road data by pressing quit. If you want to calculate a
straight element press Do Straight. The following screen will be displayed.
Enter the data in a similar
fashion as for the curved element, the calculated co-ordinates are displayed as
before.
Press Quit to return to the
main screen.
The
default extension for files used for
saving data in Pocket S-Calc are .csv, the standard extension for Microsoft
Excel comma delimited files. You can change this if you wish. The files can be
edited in any text editor or spreadsheet programme.
To
transfer co-ordinate files to the Pocket PC for use by S-Calc save them as
comma delimited files (.csv) and simply copy them to the directory of your
choice on the Pocket PC.
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