I had write one line of query language in ProtelDXP as the following:
IsTrack and ((ABS(X1-X2)-ABS(Y1-Y2))=0)
Its target is to find out all the tracks with their lean at 45-degree or 135-degree.
After the execution of the program, some tracks are found while some tracks satisfied
with
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 10, 2004 6:00 PM
To: Protel EDA Forum
Subject: Re: [PEDA] Semiconducto rmfg Footprint creation
The info that you want though is available but its just not in an easily usable
form for Protel. Im
- Original Message -
From: Mr. Zhang Yangtian [EMAIL PROTECTED]
To: Protel [EMAIL PROTECTED]
Sent: Thursday, February 12, 2004 4:47 AM
Subject: [PEDA] What's wrong with my query language program
I had write one line of query language in ProtelDXP as the following:
IsTrack and
Or just use the following query: IsOblique
Best regards
Mattias
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Mattias Ericson, B.Sc.E.E.
Omnisys Instruments AB
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Bevan Weiss wrote:
you need to you use the abs value of each coordinate
Bevan Weiss wrote:
- Original Message -
From: Mr. Zhang Yangtian [EMAIL PROTECTED]
To: Protel [EMAIL PROTECTED]
Sent: Thursday, February 12, 2004 4:47 AM
Subject: [PEDA] What's wrong with my query language program
I had
Not sure exactly what it is you're referencing here.
The absolute value of each coordinat (ie X1 and aso X2) would give the
incorrect length for the segment.
given X1 = 12 and X2 = -4 (by your reasoning this would give a horizontal
length of -8, which is not the case)
I have the formula correct,
In fact, there is no important difference between subtraction and division. The
problem is at the equal mark =. With low precision of floating point calculation,
the result of the track lean angle may be 45.1 or 44.99. These values
are not equal to 45.00. So some tracks
Try it using the division... it makes more sense if you're trying to judge
based on an angle.
As for how to remove the fractional part, you would simply use the round
function. However it looks like this is not working properly (at least I
can't get it to)
Can someone else try something simple
But I worry about a problem that the denominator will be zero at some condition when
using division. I have tried the key word of ROUDNI met the same problem as yours,
DXP tells me that it expects a ). I find another function similar like ROUND, it is
INT. This function can work well under
On 02:47 AM 12/02/2004, Mr. Zhang Yangtian said:
I had write one line of query language in ProtelDXP as the following:
IsTrack and ((ABS(X1-X2)-ABS(Y1-Y2))=0)
Its target is to find out all the tracks with their lean at 45-degree or
135-degree. After the execution of the program, some
IsOblique will get all tracks whose angle is not a multiple of 90degrees.
Hence if you have a 60degree track it will also be picked up...
Are they short tracks? Your query will pick up all short tracks
regardless
of angle - lets say you have the PCB units set to metric. Lets say you
have a
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