1 point = 1/72 of an inch 5 points > 5/72 of an inch.
At scale 1:50000, that would represent 50000 * 5 / 72 inches >~ 88.4722
meters.
The difference between y1 and y2 should thus be 88.5 meters. That between X1
and X2 is more problematic. If it is not wide enough to house the text, the
text will appear but the behaviour of this object will be erratic at edit
time in particular (part will not refresh etc...). If it is too long, it may
interfere unduly with nearby objects. But the height of the text itself will
not be affected.
A partially solution to that is to use the createtext() function having to
specify only one x,y and the windowid set at the proper scale, it uses the
default font that should be set at what you want. Then get its width with
objectgeography (..xmnini,..xmaxi); you can now recreate it with the right
parameters in the create text statement.
You can use also this technique to find the correct height to use also
Preparation:
1 - set your mapper at the 1:50000 scale and locate a point close to the
left edge and at mid height>CX,CY
2 - set the current font for the mapper at 5 points of the desired font
without the previous calculations.
Set coordsys table <your_table>
Dim o as object
o=createtext(frontwindow(),CX,CY,"test de texte",0,0,0)
dim difV as float
dim difH as float
difV=objectgeography(o,4)-objectgeography(o,2)
print "Height "+str$(difV)
difH=objectgeography(o,3)-objectgeography(o,1)
print "Width "+str$(difH)
create text into window frontwindow() o "test de text" (CX,CY+difV)
(CX+difH, CY) font ("Arial",25,0,0)
As this works in the MB window, it should be feasible within a WOR.
Jacques Paris
-----Original Message-----
From: Martin Tyberg [mailto:[EMAIL PROTECTED]]
Sent: September 11, 2002 13:14
To: [EMAIL PROTECTED]
Subject: MI-L Specifying Text MBR in MIF files
Hi,
Does anyone know how to properly specify the MBR for a text object in
a MIF file so that when the MIF file is imported into MapInfo, the
height of the text object in points is equal to the size of the text
that I want at a specific scale?
For the MBR that I compute in the MIF file, the text object ends up
being bigger or smaller in point units at the scale that I want to
plot my map.
Basically, what values of x1,y1 and x2,y2 should I specify for a text
object such that the text object ends up being imported into MapInfo as a
5 pt high text, for example, at a scale of 50000?
Thanks in advance.
Martin
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