«J# Gemeente
w$ß Rotterdam
kartografisch tekenaar
I
Dienst van Gemeentewerken:
(m/v)
Influenced by other map elements, sometimes the
distance between text and symbol might be larger than
the optical half capital height (fig. 20-22).
Rough background structures influence the legibility
of text and should be interrupted correctly (fig. 23-24).
In some exeptional cases the spatial Situation of the
symbol itself requires positioning not according to
the principles of balancing: e.g. significant position
of towns in relation to the right or left side of a river;
placement of names belonging to coast towns by
preference in the sea; the names belonging to diagram i
symbols in thematic maps are advised to be placed in
a fixed position in relation to the symbol as an
integrated part of the diagram design (fig. 25).
When the balance in the graphic space exclusively
defines the positioning of a name belonging to a point
symbol, one cannot maintain the 'ideal' positions
recommended by some authers on the subject: to the
right, somewhat above the centre of the symbol
(Krümmel/Eckert, Imhof, Arnberger, Robinson and
others), below the symbol (Raisz), above to the left
(Crovitz and Friedman).
Neither are the sequences given by Imhof and Raisz
applicable (fig. 27). After assessment of the spatial
position a second phase in positioning of names is
introduced: to create possibly a graphic relation
between text and symbol, in order to increase the
reading speed. Figure 29 shows some of these
relations.
Several perception aspects of area names are men-
tioned: the spatial 'radiation' of a name, which is
about double the name length for areas with boundaries
and l\ times letter distance for area names without
boundary. Long area names depicting compact areas
should be cut in order to avoid a Suggestion of
elongated areas.
Spaced texts are perceived as stretched and trans
parent, which characteristics are in correspondence
with line and area symbols.
Spaced texts allow application of small letter sizes
and tidy arrangement (fig. 35). Larger spacing than
2 or 3 times capital height makes it impossible to
read the text in one Single moment of perception.
Difference in spacing is perceived as difference in
quality, that is why features which are equal in
quality but different in size should be represented
with similar spacing (proportionally) and size
differences (fig. 38). In maps containing one Single
text unit, size differences should be limited (fig. 39).
When text is placed according to the discussed
principles of balanced division of the graphic space
and when a number of perception effects, have been
taken into account, than it must be possible to increase
the speed of reading and improve the legibility.
This might result in that indefinable caress of the eye,
surpassing the graphic percention, which is the
experience of Graphic Beauty.
Rotterdam vraagt voor de onderafdeling Kartografie, die
behoort tot de afdeling Landmeten van deze dienst, een
Tot de taak behoort het vervaardigen, bijhouden en
reproduceren van kleinschalige topografische stadskaar-
ten op schaal (te weten 1:5000, 1:10.000 tot 1:200,000).
Voorts het ontwerpen, vervaardigen en reproduceren van
een omvangrijk pakket thematische kaarten op verschil-
lende schalen. Ook het vervaardigen en onderhouden van
zgn. wijkplattegronden wordt tot zijn/haar werkzaamhe-
den gerekend.
Kandidaten in het bezit van het diploma Kartografisch
tekenaar PBNA met tevens enige jaren ervaring in het
graveren hebben de voorkeur. Zij, die vergevorderd zijn
met de Studie van Kartografisch tekenaar PBNA kunnen
eveneens solliciteren. Kennis van (chemigrafische) repro-
duktie is gewenst.
Het salaris loopt tot f 2.665,— per maand, afhankelijk van
leeftijd, opleiding en ervaring.
Vakaturenummer 78.729/81043
Schriftelijke sollicitaties, gaarne binnen 10 dagen en on-
der vermelding van het vakaturenummer, te zenden aan:
hoofd Bureau Personeelvoorziening, Postbus 70015,3000
KT Rotterdam.
26
1978.IV. 4
