Area calculation from layout in cadence 6.1.4

Measure it (with the ruler, or just by reading coordinates off the banner) and multiply the width by the height.

I presume you want something other than that (since that's rather obvious), but if so, you'll probably need to more clearly describe what you're after.

Regards,

Andrew.

Thanks for your reply... Yes I have read the coordinates and they are 11*6. I think it is 11 lambda* 6 lambda = 66 (lamda)^2. But what is the value of lamda? How to know its value? Please reply me if you can bcoz I am having exams after three days...Thank you...

How long is a piece of string? ;->

If you're using a technology that uses "lambda rules", then the dimensions may well be in lambda - and you'd have to know what real technology that the design is being targetted for to know what the value of lambda is. 

In most cases though your units are in microns though.

If you're unsure, you should speak to your supervisor/tutor who will be more familiar with the specifics of what you're trying to do than somebody on a forum with little visibility of your project.

Regards.,

Andrew.

HI Andrew,

i have a related topic.

we are going to caculare some layers' area.But you know, the shape of the layer is not  regular.i mean , the shape of them are not like rectangle or circle.so do we have any approximation method or function to caculte them?

our cadence virtuoso version is 6.1.6.

BTW, this is the most hilarous discussion i have read in the internet forum.That is also why i like this place.

thanks for your patience. :)

This function can be used. For a polygon it effectively "integrates over the boundary" (sort of).

/***************************************************************
*                                                              *
*                       (abArea object)                        *
*                                                              *
*               Calculate the area of an object.               *
*      Currently only works with polygons and rectangles.      *
*                                                              *
***************************************************************/

(procedure (abArea object)
  (let (sum crd lastPt firstPt crdList area corners ll ur dx dy objType)
        (setq objType (dbGetq object objType))
        (if (equal objType "polygon") 
            (progn
             (setq crdList (dbGetq object points))
             (setq sum 0)
             (setq firstPt (setq lastPt (car crdList)))
             (setq crdList (cdr crdList))
             (foreach crd crdList
                      (setq dx (difference (xCoord crd) (xCoord lastPt)))
                      (setq sum (plus sum (times dx (plus (yCoord crd) (yCoord lastPt)))))
                      (setq lastPt crd))
             (setq sum (plus sum
                             (times (difference (xCoord firstPt) (xCoord lastPt))
                                    (plus (yCoord firstPt) (yCoord lastPt)))))
             (setq area (times 0.5 (abs sum))))
            (when (equal objType "rect") 
                  (setq corners (dbGetq object bBox))
                  (setq ll (car corners))
                  (setq ur (cadr corners))
                  (setq dx (difference (xCoord ll) (xCoord ur)))
                  (setq dy (difference (yCoord ll) (yCoord ur)))
                  (setq area (abs (times dx dy))))
            )
       area))

Hi Andrew, when i used the above script, there are some errors about format. so i tried to do some small changes about it. Thanks so much for you.

procedure(LAYareaSize()
  let(
    (object objType
    )
   
    object = geGetSelectedSet()
    objT = car(object~>objType)
    println("s1")
    printf("objT is %s.\n" objT)
   
    if( objT == "polygon"
          then
     LAYpolyarea(object)
          else
            if( objT == "rect"
          then
     LAYrectarea(object)
   else
     printf("wrong shape.\n")
                 );;;**if**
          );;;**polygon**
      
       );;;
        
);;;**procedure**
 
  
 
procedure(LAYpolyarea(object)
   let(
     (object crdList sum firstPt lastPt dx sum
     )
     object=geGetSelectedSet()
     crdList = object~>points
     printf("the crdList is %L." crdList)
     sum = 0
     firstPt = lastPt = caar(crdList)
     crdList = cdar(crdList)
     printf("the firstPt is %L \n." firstPt)
     printf("the crdList is %L.\n" crdList)
       
     (foreach crd crdList
        dx = difference((xCoord crd) (xCoord lastPt))
        sum = (plus sum (times dx (plus (yCoord crd)(yCoord lastPt))))
        lastPt = crd
     );;;**foreach**  
              
     sum = (plus sum (times (difference (xCoord firstPt) (xCoord lastPt))(plus (yCoord firstPt)(yCoord lastPt))))
     area = (times 0.5 (abs sum))
     printf("this polygon's area is %f.\n" area)
   );;;*let*
 );;;*procedure(LAYpolyarea)**
 
 
      
 procedure(LAYrectarea(object)
    let(
      (object ll ur dx corners     
      )
       object=geGetSelectedSet()
       corners = object~>bBox
       ll = caar(corners)
       ur = car(cdar(corners))
       dx = (difference (xCoord ll) (xCoord ur))
       dy = (difference (yCoord ll) (yCoord ur))
       area = (abs (times dx dy))
       printf("this rect's area is %f.\n" area)
     );;;**let**
  );;;**procedure(LAYrectarea)**
     

 Not sure why - I managed to cut and paste it just now and it worked perfectly...

Andrew.

Hi, 

Thank you for posting the code. 

I was able to obtain the area of an object running the command Guruprasad posted. However, is there a way to return the total area of several geometries on a layout?

Currently, if I select several geometries and run the command, it returns only the area of the first selected geometry.

I appreciate any help I could get!

Thank you and Regards,

Helen

Hi Helen,

Maybe my code in this solution will help:

Regards,

Andrew.