Chronoscope World Guide - Filter @mprove

Intro
Filter Maps
1. Filter Maps by Time Frame
2. Filter Maps by Scale
3. Filter Maps by Text
4. Filter Maps by Signature
Import
IIIF Maps & IIIF Books
Info Spots
Release Notes

The Outline mode offers access to the filter settings.

Enable the Outlines and Filter mode now in the Chronoscope above or push the button

The Dark mode provides the best contrast between map outlines and the background map. But still, the amount of lines can be overwhelming. Therefore dynamic filters help to find the maps of interest.

Switch into Dark mode now

Top right is a current counter of available maps. The number of matching maps inside the current view is in square brackets. It is followed by the number of all fitting maps world-wide.

Filter Maps by Time Frame

Each map has a specific year assigned. Usually it is the year of publication. If a map shows an already historic event, the year of the depicted scenario is used.

Use the slider at the bottom of the screen to set a lower and upper time limit for the set of active maps.

The active area of the slider can be dragged right and left to shift the time frame though time. Use key right shift Y or left shift Y for a step forward or backwards.

Use key Y to limit the time frame to plus/minus 10 years relative to selected map.

Double press the key YY to resets the time frame filter.

Exercise

Look for the Seven Years' War from 1756 till 1763.

Filter Maps by Scale

The scale slider is at the left side of the screen. Use it to limit the range of maps to a specific scale – from continental maps at the top, to country, region, to urban, to districts, to architecture plans at the bottom. Two extra buttons accompany the scale slide:

All scales. Double press the key $$ to resets the scale filter.

Fit scales to current zoom level. Key $

Filter Maps by Text

The text filter is a character string that must occur is the map’s title. Otherwise the map will be hidden.

Some tips for successful querries:

Less is more. Enter just the first few letters of a term to find variations as well. For instance enter geol to find maps with »geologie«, »geologisch« or even »geognostisch«
List search strings – comma separated – to find maps that match either of the terms. For instance enter Eisenb,rail to find both German and English maps on railways.
Comma-separated OR lists can be combined with @ to get the intersection of both lists. The @ act like a logical AND.
Keep in mind that most of the maps have German titles. But English, French, Russian or Chinese is used as well.
Some terms have been added as pre-defined hash tags. Try Bathy to retreive maps on bathymetric maps.

Use key , to open the dialog.

Double press the key ,, to resets the text filter.

Exercise

Look for maps with lighthouses.
Look for maps on telegraphy.

Filter Maps by Signature

Each library or archive has a specific two letter signature to identify all of its maps. The Signature popup is used to show just the maps by a library or to hide maps by another;
for instance, 'HL' is the signature for maps provided by Harvard Libray.

The factory setting is No 'LX' maps because maps by Leibniz Library Hannover are not fully georeferenced. Only bounding boxes are available.

Reset Filters

Time frame, scale, text and signature filters will all be reset by key AltX

You can also double press a key:

YY resets the time frame filter.
$$ resets the scale filter.
,, resets the text filter.
LL resets all filters.

About Chronoscope World

Chronoscope World is the core module of the Chrono Research Lab.

You can support Chronoscope Hamburg and Chronoscope World by sharing ChronoLinks relentlesly. Historical insights have been shared on twitter at chronohh. But meanwhile the music plays on Mastodon at Chrono Matthias

The Chrono Research Lab is an independant and free time-traveling service by Matthias Müller-Prove. However, some expenses are not really covered. Luckily, the human society has invented real money to buy me a virtual coffee:

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