**Calculating Area from Longitude and Latitude**I am writing a program that has the following information. a list of
venders that have Long and Lat coordinates, and my address (in Long
and Lat). I need find the min and max Long and latitude that would
exist in an area of x miles. Ideally I would like my address to be in
the middle and be able to select venders that fall withing that range.
I am having trouble finding the proper equations. I am not concerned
that everything be exact to the nth degree. A good approximation
would be fine. If any one could comment or send me in the right
direction I would sure appreciate it.
t...

**MySQL Longitude & Latitude calculations**Hi,
I'm buiding a site around the google maps API, I have a lot of data
already though which is all contains longitude & latitude data. I'm
want to do operations like "add the 10 closest matches as markers to
the current google map".
To acomplish this I'm going to need to query SQL to find the top 10
results in my database (which contains about 7.5 million entities)
given a longitude & latitude coordinates.
I was wondering if anyone had any existing code they post to help me
get my head around it, or even just ideas on how I could acomplish
this.
...

**how to calculate distance from pairs of latitude/longitude measurements?**I am working on a project where I will be receiving measurements from
the Global
Positioning System, presumably latitude and longitude measurements,
and I will
need to calculate the distances between the measurement points. The
measurements
will all be taken over a region of only a few miles so I guess I could
assume
the earth is flat over this region and just calculate the straight
line
distance.
But I was wondering if anyone could help me with a more mathematically
rigorous method for calculating distance from pairs of latitude/
longitude
measurements?
thanks,
llo
I found MAP_PROJ_FORDWA...

**Calculate new Latitude / Longitude from Bearing and Distance**Greetings, does anyone have a calculation that calculates the new
latitude and longitude based on a starting point, bearing and
distance?
I would greatly appreciate any help people might have.
Many Thanks,
Aaron
Aaron,
I think the formulae shown on the following page will help:
http://www.movable-type.co.uk/scripts/latlong.html
Art
--------
On Wed, 21 Jan 2009 16:55:12 -0800, anderson115@GMAIL.COM wrote:
>Greetings, does anyone have a calculation that calculates the new
>latitude and longitude based on a starting point, bearing and
>distance?
>
>I would greatly appreciate...

**how to calculate latitude and longitude from range and direction(azimuth and elevation)**Hello. All,
I am looking for s/w or sub-routing to calculated latitude and
longitude from slant range, elevation and azimuth angle with earth
curvature.
Would you let me know the tips or where this sub-routine can be found?
Thanks!!
On 11/8/10 8:24 PM, bjkuk wrote:
> Hello. All,
> I am looking for s/w or sub-routing to calculated latitude and
> longitude from slant range, elevation and azimuth angle with earth
> curvature.
> Would you let me know the tips or where this sub-routine can be found?
> Thanks!!
Hi,
A long time ago I adapted code shared by Liam Gu...

**MySQL query for WGS-84 longitude & latitude radius GPS distance calculation**WGS-84 Proximity Search with Longitude & Latitude decimal co-ordinates
Example: Hotel Burnham in Downtown Chicago is located at:
1 West Washington Street, Chicago, IL
Latitude: 41.883190
Longitude: -87.627940
I absolutely want to help some people out there with the same problem I
faced. I spent all night scanning lines of code trying SQL and C# code
that simply just DOES NOT work. There is TONS of crap code scattered
all over the internet, but very many great articles explaining how
everything works, so I piggybacked on the knowledge out there to get a
working solution. For those like me...

**MySQL query for WGS-84 longitude & latitude radius GPS distance calculation**WGS-84 Proximity Search with Longitude & Latitude decimal co-ordinates
Example: Hotel Burnham in Downtown Chicago is located at:
1 West Washington Street, Chicago, IL
Latitude: 41.883190
Longitude: -87.627940
I absolutely want to help some people out there with the same problem I
faced. I spent all night scanning lines of code trying SQL and C# code
that simply just DOES NOT work. There is TONS of crap code scattered
all over the internet, but very many great articles explaining how
everything works, so I piggybacked on the knowledge out there to get a
working solution. For t...

**calculate the area of an java.awt.geom.Area?**I have a java.awt.geom.Area, created from the combination of some polygons
(by adding them), and I would like to calculate the area of my new object.
The Area class does not include such a method. (and neither did the Polygon
class). Any tips on how I could do it?
--
Josef Garvi
"Reversing desertification through drought tolerant trees"
http://www.eden-foundation.org/
new income - better environment - more food - less poverty
Josef Garvi schrieb:
> I have a java.awt.geom.Area, created from the combination of some
> polygons (by adding them), and I would like to calcul...

**area calculation**Is there a built-in
cadence function to calculate the area of any
polygon or rectangle in cadence ?
i could do it myself but i am wondering if it already existed
> Is there a built-in
> cadence function to calculate the area of any
> polygon or rectangle in cadence ?
There's such a function in the turbo toolbox, if I remember correctly.
No public SKILL function that I'm aware of, though.
St�phane
see if this works for you???
(inScheme
(defun jenPolygonArea (perim "l")
(let ((ymin (apply 'min (mapcar 'cadr perim))))
(let ((area (lambda (p1 p2...

**calculate the area**Hi All,
I need to calculate the area for the following curve:
y/(1-y)=c*x/(1-x)
Can any one help me to get a formula? Thanks!
Steven
I assume you don't have Mathematica? This is too easy...
In[188]:= Solve[y/(1 - y) == c*x/(1 - x), y]
Out[188]= {{y -> (c x)/(1 - x + c x)}}
In[189]:= Integrate[(c x)/(1 - x + c x), x]
Out[189]= c (x/(-1 + c) - Log[1 - x + c x]/(-1 + c)^2)
Obviously, 1 - x + c x and x-1 shouldn't be zero
Cheers -- Sjoerd
On Sep 24, 10:14 am, Steven <stevenwang....@gmail.com> wrote:
> Hi All,
>
> I need to calculate...

**Calculation of Area**Hi,
I am currently plotting x and y coordinates representing the "center
of foot pressure" for both the left (-x) and right (+x) foot for each
Hz of data collected, during running, on the same plot.
I currently have a loop, from which I am plotting each foot step's
instantaneous x and y position while the foot is on the ground. The
loop ends when the foot leaves the ground.
As a result I have a created a figure which overlaps each step's
center of pressure line (series of instantaneous x-y coordinates) for
both the left and right feet.
I would like to now quantify the are...

**area calculation**how to calculate the area of white portions in a threshold image?
On Mar 28, 8:45=A0am, "RAJAN " <rdutt...@yahoo.com> wrote:
> how to calculate the area of white portions in a threshold image? =A0
the command "regionprops" may help you
shows many properties as area, major axis etc.
On Mar 27, 11:45=A0pm, "RAJAN " <rdutt...@yahoo.com> wrote:
> how to calculate the area of white portions in a threshold image? =A0
------------------------------------------------
See my image segmentation tutorial, BlobsDemo:
http://www.mathworks.co...

**calculating area**Hi all,
I have a set of data, that can be plotted into 2D curve. Its x axis is time domain, my time step is 1 second. I got this from measurement device. Somehow, I need to find the area under this measurement curve. Can anyone tell me how to do this?
Btw, I have the measurement data listed on excel file.
Thanks
In article <7302192.1187208575836.JavaMail.jakarta@nitrogen.mathforum.org>,
arya <arya.dirgayasa@gmail.com> wrote:
>I have a set of data, that can be plotted into 2D curve. Its x axis is time domain, my time step is 1 second. I got this from measurement device. Some...

**How would you calculate this area?**Hi.
I’m trying to determine some areas of irregular shapes and would like to hear some recommendations on how to achieve it.
The situation is this. It is basically a soil slope with different layers. I have to determine the total weight of each of the vertical slices shown in the figure below (the red vertical lines are the limits of each slice). However, each of the different soil layers has a different density (and it also varies depending on whether the soil is dry or not, where the yellow line is the water table). I’m only interested in the area that is not in grey.
http://www.flickr....

**Area calculations?**Is there a simple way to numericaly calculate the area of contours made with the contour command?
cheers
"Olle" <olleorama@gmail.com> kirjoitti viestiss�
news:28612049.1139464750449.JavaMail.jakarta@nitrogen.mathforum.org...
> Is there a simple way to numericaly calculate the area of contours made
with the contour command?
>
> cheers
contour returns the contour levels as polygons so polyarea
should give you the area then.
marky
...

**Calculate Area**Hi,
What is the unit when I use the calculate area function? I'd trying
to convert it to miles.
map units. look in the help.
AGP
"aliceinphx" <alice.chen0@gmail.com> wrote in message
news:1177618806.664495.310460@s33g2000prh.googlegroups.com...
> Hi,
>
> What is the unit when I use the calculate area function? I'd trying
> to convert it to miles.
>
...

**Calculating areas**I have a lisp program that will calculate the sum of areas.
The units is in sq in. Is there a way to modify the program
to make the units sq ft besides dividing by 144 on a calculator?
Any help is appreciated.
(DEFUN C:AREASADD ()
(PROMPT "\nSELECT AREAS TO ADD TOGETHER: ")
(SETQ P_AREA 0.0)
(SETQ SS (SSGET))
(WHILE (> (SSLENGTH SS) 0)
(SETQ EN (SSNAME SS 0))
(SETQ ED (ENTGET EN))
(SETQ AS (CDR (ASSOC '0 ED)))
(IF (or (= AS "LWPOLYLINE") (= as "POLYLINE"))
(PROGN
(COMMAND "_AREA" "_E" EN)
(SETQ P_AREA (+ P_AREA (...

**BUG: Area calculations**I just noticed that area calculations are based on displayed face area
and not actual face area.
Create a disk with a hole in the center.
Turn on section view and make sure it cuts the disk in half.
Measure the surface area.
Now turn off the section view and measure the same face.
Should measure twice what it was in the section view.
This is not right. Section view should only open inner details, not
change the area of the internal faces.
Call your VAR and report it. I had the same thing here.
Corey
"P." <kellnerp@cbd.net> wrote in message
news:1102879447.881258.12040@z1...

**Varying a Latitude/Longitude**A while ago while I was in the Army I co-wrote an exercise SIGINT
generator with a friend. We made a mess of a few functions called
VaryLat and VaryLong. The functions basically took in two arguments: a
Latitude or Longitude and an amount to vary it by(in seconds). The
second parameter could be any number positive or negative. The real
issues started rising when we figured out that crossing over either the
90' mark or the 180' mark was throwing off our numbers. The functions
turned out to be very long seeing as how neither of us was very
experience with Perl at the time. I wish I had t...

**Area calculation #5**Hi All,
Im a beginner in Matlab and have been given a task to segmentate liver from ct images. I have managed to use threshold and sharpen the image to a certain level and have used bwlabel to label the connected regions. Now, I need help on how to use regionprop to just make the liver as the ROI. I have thought of using the Area property but would need assistance on how to compute the areas for each labeled region and then compare them to get the biggest area.
Look forward for your help.
Thank you in advance!
P/s:sorry if my question is too shallow. Im still learning how to use Matlab :D
O...

**area calculation #3**I want to calculate area of a object in an binary image.
For binary image , I (x,y)=1, for object pixels and
I (x,y)=0, for backgrond pixels.
then the estimation of area ia given by the equation,
Area = summation of I(x,y)
Please tell me how to implement this formula.
Thank you.
"krishna " <ingle.krishna@gmail.com> wrote in message
<g3dl4q$129$1@fred.mathworks.com>...
> I want to calculate area of a object in an binary image.
>
> For binary image , I (x,y)=1, for object pixels and
> I (x,y)=0, for back...

**Problem in calculating area!**Hello,
I have some samples that has different degrees of damage.
http://drop.io/rlv072i
you can see that there are two boundaries. I am trying to calculate the area of the small one.
I tried to adjust the contrast, and then use some of the previously posted scripts such as creaseg and ImROI, it couldn't detect the small area.
#[code]
I=imread('sample.jpg');
J = IMADJUST(I,[0.1; 0.8],[0.2; 0.9],20); % I made gamma large, as it showed the area more visible.
%imshow(I)
%figure;
%imshow(J)
imwrite(J,'test_gamma.jpg');
h=rgb2gray(J);
A = adapthisteq...

**Area calculation #2**Hi,
I Have a plot (x,y) (x and y are vectors), tha axis are
([-3000 3000 0 6000 ]), is there any mean to calculate the area
between the plotted line and the line x=0;
thanks a lot
How about the trapezoidal rule?
help trapz
...

**Calculate Area of a Polygon**Hello,
Calculating the area of a polygon is commonplace in land
surveying. I was wondering if some of you would be kind
enough to look at the program AREA and perhaps show me how
to make it more efficient. Kindly keep the suggestions
within the realm of User-RPL.
Regards,
Mark
AREA:
\<< 1 CF
" DEFINE AREA" {
"" { 1 0 } V }
INPUT OBJ\-> DEPTH
\->LIST DUP SIZE 1
\<< 1 \<-size
FOR \<-x \<-points \<-x
GET RCLPT 1 FS?
\<< SWAP
\>> IFT DROP
NEXT
\>>
\<< \<-size DUPN \<-size
R...