The Daily Render by Nikolas R. Schiller

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Meridian Hill Park Hexagon Tessellation by Nikolas R. Schiller

This is the first time I’ve made a tessellation using hexagon as the basis for the pattern. Normally, I simply use a square because its the easiest to tessellate. The last map I made using Photoshop was Clayton Quilt #3, which was constructed using one square tile six times and did not exhibit radial symmetry like most of my other Qulit projection maps.

This time around I used center portion of the source tile that I used for Meridian Hill Park Quilt #4 and to switch things up a bit, I cut out a perfect hexagon from the the tile instead of using the tile’s square shape as basis for the tessellation. With one hexagon cut out, I merely duplicated it and moved it around to create the irregular tiling above. The difficulty was that I had to adjust the hexagon tiles so that they were not overlapping. It wasn’t that difficult per se, but it took awhile to get them all lined up perfectly. I am quite pleased with the result and figure that I will use this process again sometime in the not-so-distance future.

View the Google Map of Meridian Hill Park in Washington, DC.

: detail :
Detail of Meridian Hill Park Hexagon Tessellation by Nikolas R. Schiller

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Render A Comment || || Posted One Year Ago: The Shanghai Map

8/1/2008 || 4:54 pm
The Use of the Analemma - As explained around 1780

A couple months ago I posted the astrophotography of Anthony Ayiomamitis and went into some cursory detail in explaining what an Analemma was. Last night I was perusing the on-line collection of maps in the Library of Congress‘ Geography & Mapping Division and came across Bowles’s new and accurate map of the world, or Terrestrial globe : laid down from the best observations and newest discoveries particularly those lately made in the south seas by Anson, Byron, Wallis, Bouganville, Cook, and other celebrated circumnavigators, illustrated with a variety of useful projections and representations of the heavenly bodies the most approved astronomical and geographical definitions tables, and problems with an easy and familiar explanation of the most curious and interesting phoenomena in the universal system. (yeah thats the official name of the map!)

It was published around 1780 in London for the proprietor Carington Bowles and it features quite a few ancillary maps, including a map of the solar system- both northern & southern hemisphere, astronomical latitude and longitude analemma (below), a chart of the world drawn according to Mercator’s projection, a map of the moon (a selenograph), and a diagram of seasons (which I absolutely love). I expect to reuse portions of this map for upcoming entries because its so laden with unique information. For example, there are drawings on how the planets looked like through the telescope and even the oldest drawings of sunspots that I’ve ever seen.

As for this entry, on the right side of the map are two spheres that were designed to teach the viewer how to understand the Analemma and use it to estimate the location of the Sun, planet, or any fixed star anytime in the past, present, or future. While I still haven’t fully wrapped my mind around the instructions, I have transcribed the text from the map below. There are a few errors and typos but I tried my best to keep the text as close to the original as possible.

By clicking on either of the images you can view a larger version and investigate the text yourself. As a decorative element, I used a portion of the tessellation I used to construct Meridian Hill Park Quilt #4 as the background.

The Use of the Analemma
The Analemma is a very useful (tho’ not commonly used) Projection of the Sphere on a plane. In this Projection the Eye is supposed to view the Sphere or Globe with all its Lines both real and imaginary from a Place so far distant that Mathematicians usually term this Distance in definite, and sometimes infinite.

In this Projection the Meridians and Circles of Declination as they are farther removed from the Centre of the Projection, appear nearer to each other and therefore more confused and on this Account Maps of the Earth and Heavens are generally delineated according to other Principles. Nevertheless there are several Properties belonging to this orthographic Projection, which are superior to all other Projections namely. 1st. In this Projection, the Circles of Latitude on the Earth’s Globe, from the Equator to the Pole, are all of them strait Lines, as are also all those Circles of equal Distance from London or any other Place on the Earth’s Globe all around London or any other Place. 2nd. The Distances of Places in the same Latitude are also measured by strait Lines in this Projection 3rd. The Meridians are Ellipses in this Projection and the Degrees of terrestrial Latitude are here measured on those Ellipses.

In like Manner for the Heavens 1st. The Parallels of the Sun’s and Stars Declination from the Equator, are in this Projection measured by strait Lines, which affords a very easy and elegant Construction of Properties of the celestial Sphere on a Plane. 2nd. The Parallels of Altitude for Sun or Stars at any Place on the Earth’s Globe are here also Strait Lines, Like the Parallels of Declination. 3rd. The Celestial Meridians, and the great Circles extending from the Zenith to the Nadir, in this Projection are Ellipses. 4th The Sun’s Declination North or South being but 23 1/2 degrees and the Degrees being in this Projection so near to an Equality from the Centre to the Tropic of Cancer and the Tropic of Capricorn, several of the most entertaining and useful Particulars relating to the Doctrine of the Sphere & Astronomy are more easily & elegantly solved by this Construction than any other.

From all which it follows that the Analemma or orthographical projection of the Sphere on a Plane is what everyone should understand who would not be at the expense of those expensive Instruments, Spheres, Globes etc., nor be at Pains and Attention enough to learn Mathematics and the necessary calculation.

On these Accounts we have given on the opposite side of this Map a Delineation which will be abundantly useful in the Application of the Analemma. And for a further Illustration of the Projection, Read what follows.

Table of the Place of the Sun in the Ecliptic and Declination

At the upper Part of this Map we have given a Table of the Sun’s Declination for the Beginning, Middle, and End of every Month throughout the Year, and which will be true till the Year 1808, by which Table and a single Proportion of Allowance for the Increase or Decrease of Declination, the true Declination for any Day may be easily found, also above we have given Geographical & Astronomical Definitions from which the Names of the several and respective Lines of the Earth and Heavens may be known.

Now supposing you would know the Hour of Sun Rising or Sun Setting or the Hours and Minutes of Time any Star, Planet, or the Moon is above the Horizon from the Rising to the Setting by the Analemma you first know the Latitude of that Place of the Earth where the Answer is required for. Secondly you must know the Declination of the Phenomenon whether it be Sun, Moon, or Star, and by these you may find the Time of Duration above the Horizon thus Count the Degrees of Latitude from the Equator of the Analemma downwards towards its Pole and a Strait piece of Paper of Line laid from thence to the Centre will cut the Line of Declination and the elliptical Meridians Equal to the Length of the Half Day more than Six Hours when the Place and Declination are both alike that is both North or both South but less than Six Hours, when the Place of Declination are both unlike that is one North and the Other South and this assensional Difference being either added to or subtracted from Six Hours gives the Length of the Half Day, and consequently the Time of Rising or Setting of the Sun.

The like is also to be understood of the Rising and setting of the Moon, Planets, or Fixed Stars, with this Difference, that in these you mist know if the Moon, Planet, or Stars rise sooner or Later than the Sun, which you may known whither such Star as you enquire about doth by the above Hemispheres, but for the Moon and Planets you may have Recourse to an Ephemeris Another very curious and useful Problem in the Doctrine of the Sphere is solveable after the most easy and elegant Manner by the Analemma relative to the Crepusculum or Twilight its Beginning & Ending in any Place of the Earth & at any Time of the Year it is as follows Viz.Count as before mentioned from the Equator of the Analemma to the Latitude & draw a real or imaginary Line thro’ the Centre to the opposite Side of the Analemma, then in the Circumference of y3 Analemma count 18 Degrees on each side downward & where the Parallel of the Sun or Stars Declination cuts this Strait Line the Number of elliptic Meridians from the Centre shews the Ascensional Difference.

N.B. The Equator of the Analemma is the Line 180 to 180 thro’ the Centre.

In this Analemma the Place in the Ecliptic or Distance from the next Equinoctial Point being known (which the adjacent Table will shew) the Declination and Right Ascension of the Sun are known by Inspection and for the Moon or Planets which have Latitude if such Latitude be reckoned from the Ecliptic towards the Ecliptic’s Pole the Declination & Right Ascension answering to such Latitude will be known by Inspection in the Analemma the Use of which will appear to such as know a little of the Sphere.

As the Fixed Stars are carried forward according to the Order of the Signs 50 Seconds per Year this Analemma will readily shew the Place of any Fixed Star for any Time past present or to come if its present Place be known & Contra.

Related Antique Entries: (more…)

Render A Comment || || Posted One Year Ago: 10 & 110 Quilt

7/26/2008 || 4:08 pm
Meridian Hill Park Quilt #4

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Meridian Hill Park Quilt #4 by Nikolas R. Schiller

I’ve been doing some research on an old sculpture that used to be in Meridian Hill Park that will be featured in an upcoming posting. In preparation, I decided to make a quilt projection map of the park using the newest available imagery. Unlike the previous three, which were some of the first to use my recursive tessellation technique, the newer imagery captures less of the area surrounding the park and more detail of the park itself. This is simply due to the fact that the newer imagery has a high spatial resolution than the older imagery, which correlates to more detail, but less geographic coverage. Since the aerial photography was taken in the early spring, the fountains were still in their winter slumber and I imagine that if it were taken in the summer the coloration would be vastly different.

When constructing this map, I used my new technique hypothesized in May and first rendered a hexagon tile and then took a portion of that tessellation and used it here. The result, which I am seeing for the first time, is that you can see the hexagon shape around the center of this square quilt projection map quite easily. From my understanding, depending on the location of the recursive sampling within the first map, I’ll be able to see it’s respective geometry embedded in the second map. However, I think it’s nearly impossible to fully gage the geometry of the original map after two recursions because each subsequent sampling makes it more difficult to see the geometry present in the previous map.

View the Google Map of Meridian Hill Park in Washington, DC.

: detail :

View the rest of the map’s close-up details:
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4/14/2008 || 12:42 pm
Then & Now Birds-Eye Views of the Westminster Neighborhood in Washington, DC [1884 & 2005]

Detail the bicycle track before Westminster Street was created
from Adolph Sachse’s birds-eye view of the nation’s capital, 1884

Due to file format issues, only recently have I been able to open most of the maps available in the Library of Congress’ American Memory Collection. Last night I found an interesting birds-eye view map of Washington, DC by Adolph Sachse that was published in 1884. Its a massive map that appears to be composed of six separate sheets and contains a listing of many of the businesses in Washington City as well as locations of various public & government buildings. In many ways the map acts like a geovisual address book (the phone had not been invented yet) because, at a glance, one can easily find services offered by local merchants. Judging by the branding in the upper right hand corner of the original map, it appears that the map was sponsored by the Baltimore & Ohio Railroad Company.

According to my neighborhood’s official history, Westminster Street did not exist in 1884 and the birds-eye view above supports this claim. While not labeled in the image above, Parcel 362 as it was known on the original DC maps, was called Athletic Park at that time. It had a 150-foot long grand stand along T Street, which was built in 1883 (building permit number 1047) in preparation for the fifth national convention of the League of American Wheelmen, a national organization of bicyclists. The first American bicyclist to ever ride 100 miles on an outdoor track did it on that track in 1884. As someone who uses a bicycle as their primary means of urban transportation, I can only smile knowing that 121 years ago my residence was an outdoor bicycle race track.

Below is a birds-eye view of the Westminster Neighborhood published by Microsoft, with imagery of Pictometry International. It features imagery that was taken in 2005 and when compared, you can see how much the area has changed in the last 121 years. The Athetic Park is gone and in it’s place are dozens of rowhouses that were built shortly after the map above was published. A unique and historically aware addition to the neighborhood is something you can see below in the playground on Westminster Street. No, it’s not because that is where I had my exhibit “North, South, East, Westminster“. Rather, if you look closely, you can see a small race track! A scaled reminder of what once was.

Detail of the Westminster Neighborhood by Microsoft, with imagery of Pictometry International

Related Bicycle Entries: (more…)

Render A Comment || || Posted One Year Ago: notes on the experiment one month in..

12/3/2007 || 7:42 am
2008 Washington, DC Area Calendar

Below are the months of the calendar featuring places around the Washington, DC metropolitan area and links to their respective entries so that you can see the map’s full size. Read more about the other calendars here.

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Comments Off || || Posted One Year Ago: Temporal Stereography of Schiller Park, Illinois

7/7/2007 || 7:09 am
Adams Morgan Quilt 2005 #8

: rendered at 18,000 X 12,000 :

Read my comments concerning this series here..

View the Google Map of the Adams Morgan neighborhood in Washington, DC.

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7/6/2007 || 8:08 am
Adams Morgan Quilt 2005 #7

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Read my comments concerning this series here..

View the Google Map of the Adams Morgan neighborhood in Washington, DC.

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7/5/2007 || 9:07 am
Adams Morgan Quilt 2005 #6

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Read my comments concerning this series here..

View the Google Map of the Adams Morgan neighborhood in Washington, DC.

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7/4/2007 || 8:03 am
Adams Morgan Quilt 2005 #5

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Read my comments concerning this series here..

View the Google Map of the Adams Morgan neighborhood in Washington, DC.

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Comments Off || || Posted One Year Ago: Only, in America

7/3/2007 || 12:03 pm
Adams Morgan Quilt 2005 #4

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Read my comments concerning this series here..

View the Google Map of the Adams Morgan neighborhood in Washington, DC.

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Comments Off || || Posted One Year Ago: Israel / Palestine 1993

7/2/2007 || 11:58 am
Adams Morgan Quilt 2005 #3

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Read my comments concerning this series here..

View the Google Map of the Adams Morgan neighborhood in Washington, DC.

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7/1/2007 || 8:42 am
Adams Morgan Quilt 2005 #2

: rendered at 18,000 X 12,000 :

Read my comments concerning this series here..

View the Google Map of the Adams Morgan neighborhood in Washington, DC.

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Comments Off || || Posted One Year Ago: 7 are being framed...

6/30/2007 || 11:13 am
Adams Morgan Quilt 2005

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Its been a couple years since I made a map of the Adams Morgan neighborhood in Washington, DC [wiki]. The first quilt of Adams Morgan deviated from my normal practice at the time because I modified the colors in the source imagery and the second quilt was a completely experimental map (which I have yet to revisit).

This time around I decided to go all out and make a whole series of Adams Morgan quilts using 8 different tessellations to create 8 unique maps of the area. The result shows that even when the exact same source imagery is used in each map, the nature of the tessellation creates a completely new design for the area.

Similar to the 4 maps I created for U Street in 2005, where the tessellations were labeled Northwest, Northeast, Southwest, and Southeast, the tessellations for the Adams Morgan quilts use these same tiling methods, but also include the 90 degree rotation for each tile, to create a total 8 different tessellations.

Unlike the U Street Series which only featured the Dodecagon Quilt Projection, this series features 2 Hexagons, 2 Squares, 2 Diamonds, and 2 Octagons, making a great example of the types of geometry found in the Quilt Projection.

One of the reasons why I decided to make the series for Adams Morgan (of all places in DC) was that I figured that a lot of people enjoy going to and living in Adams Morgan and thus people would be interested in possibly obtaining one or more of these maps. I also was under the impression that I was going to beat Google to the map, which would make these maps slightly more unique because people would be looking at future (assuming that Google would eventually update their servers with this same imagery).

However as I started to snoop around in Google Maps I found that they had already updated their servers for much of the DC area. Moreover, there was a lot more to their update that had been covered by any bloggers or in the media. I am going to be saving this analysis for an upcoming entry because I think it’s quite interesting and even newsworthy.

View the Google Map of the Adams Morgan neighborhood in Washington, DC

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5/12/2007 || 4:22 pm
Society is Enriched by Labor :: Socio Ditata Labore

“Antique Home”

Today I finally got around to looking through the David Ramsey Historical Map Collection. Like Archive.org, there was a lot to discover…

The above image is an assembled detail of a beautiful engraving on the title page of Atlas Nouveau, which was published in 1742 in Amsterdam (original cover after the flap). The detail contains the Latin phrase, “Socio ditata labore” and shows a scene of exploration. There is a slain dragon on the right side and on the left are soldiers bringing a woman to the new land. I couldn’t pass up this engraving! I do need a Latin translation, anyone know it? (A friend of mine was able to get a translation for me - below)

Behind the engraving is a tessellated detail from Home Quilt #5, which features the row house I’ve been living in for the last 3 years. The house was built around 1889, a 147 years after the Atlas was published. The source aerial photograph was taken in March of 2005, published in February of 2007, and revisted on March 29th, 2007, and finally today, a 265 year enrichment.

I also made a pop-art style tile that features the engraving in different colors.

From an e-mail:
Here is the report from my classicist friend in LA:

as for the latin, it doesn’t make a whole lot of sense as it stands - ’socius’ is a friend, companion, (father in law in some contexts) - so it could be some sort of dedication, as in: ‘for my father in law, with enriched labor” - which, as I say, makes no sense. if, however, ’societas’ has been mistaken for ’socio,’ then it can read, as you say, ‘society is enriched by labor.’

Title Page & Notes:
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4/25/2007 || 9:45 am
Vermont Avenue Sprocket

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The process to make this map is a bit complex but so is the result. Very pleased.

View the Google Map of the intersection of Vermont Ave and U Street in Washington, DC.

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Comments Off || || Posted One Year Ago: Rosslyn Quilt #2

3/30/2007 || 3:23 pm
Home Quilt #6

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This is the 10th map of my neighborhood and I think it’s the 3rd fractal. It turned out perfectly- minus the fact that I acciddentally yanked the power plug to my external hard drive and had to start the rendering all over again… My next map should be of Charleston, South Carolina.

View the Google Map of the Shaw neighborhood in Washington, DC.

Related Maps:
• Home Quilt
• Home Quilt #2
• Home Quilt #3
• Home Quilt #4
• Home Quilt #5
• U Street, NW
• U Street, NE
• U Street, SW
• U Street, SE

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Comments Off || || Posted One Year Ago: beating them to the map, Bloomington Quilt

3/29/2007 || 3:22 pm
Home Quilt #5

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It’s been well over a year since I’ve made any maps of my neighborhood and with this installment I’ll have 9 maps that feature the rowhouse I live in.

This is the first quilt projection using the 2005 imagery of Washington, DC and I’m quite pleased with how it turned out. Sadly, the “NO WAR” brickwork on my rooftop is not present, but at .16 meters per pixel it’s rich with detail. Up next will be #6 based off of a derivative tessellation created from this map. Like the White House and the U.S. Capitol, I can now say that I beat google maps to my house

View the Google Map of the Shaw neighborhood in Washington, DC.

Related Maps:
• Home Quilt
• Home Quilt #2
• Home Quilt #3
• Home Quilt #4
• U Street, NW
• U Street, NE
• U Street, SW
• U Street, SE

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Comments Off || || Posted One Year Ago: Pierre Quilt #2

12/2/2006 || 11:47 pm
Meridian Hill Park Mask

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This map was commissioned by a friend of mine and went through four drafts before perfection.

View the Google Map of the Meridian Hill Park in Ward 1 of Washington, DC.

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Comments Off || || Posted One Year Ago: Beverly Hills Quilt #3, I was elected!

10/2/2006 || 11:08 pm
A Degraded Mask of Meridian Hill Park

I took a draft of an African mask design for a client and degraded it to make it look slightly older. It’s Cardozo High School to Meridian Hill Park in Northwest Washington, DC and somewhere in that map is the client’s house.

The map was completed on December 2nd, 2006. View the drafts:
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