Running into srs longer than 256 characters

[postfalk]

Using

gdalinfo 2003_01.01.250m_16_days_NDVI.tif

I am getting

PROJCS["SINUSOIDAL Unspecified Datum. Semi-major axis: 6371007.181000, Semi-minor axis: 0.000000",
    GEOGCS["unknown",
        DATUM["unknown",
            SPHEROID["unnamed",6371007.181,0]],
        PRIMEM["Greenwich",0],
        UNIT["degree",0.0174532925199433]],
    PROJECTION["Sinusoidal"],
    PARAMETER["longitude_of_center",0],
    PARAMETER["false_easting",0],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]]]

... which has 395 characters with indention removed. The max_length attribute is hard to override because of the abstract model class. Do you have suggestions?

[bkg]

Ah, sorry about that, I should have considered the length more carefully. As you mentioned, there is not a straightfoward way to alter this in derived models.

The projcs name here is not standard and could be anything. You can run gdalsrsinfo on your projection to see the proj4 def is +proj=sinu +lon_0=0 +x_0=0 +y_0=0 +a=6371007.181 +b=6371007.181 +units=m +no_defs. Then run gdalsrsinfo on the resulting proj4 def. You can see the WKT representation contains PROJCS["unnamed", so you can use that. Ugh, nevermind, that is still 286 chars.

Instead of CharField with a max length, I think I will transition to TextField here.

[postfalk]

Ok, thank you very much.
Falk

---

From: Brian Galey [notifications@github.com]
Sent: Friday, July 10, 2015 12:37 PM
To: bkg/django-spillway
Cc: Falk Schuetzenmeister
Subject: Re: [django-spillway] Running into srs longer than 256 characters (#32)

Ah, sorry about that, I should have considered the length more carefully. As you mentioned, there is not a straightfoward way to alter this in derived models.

The projcs name here is not standard and could be anything. You can run gdalsrsinfo on your projection to see the proj4 def is +proj=sinu +lon_0=0 +x_0=0 +y_0=0 +a=6371007.181 +b=6371007.181 +units=m +no_defs. Then run gdalsrsinfo on the resulting proj4 def. You can see the WKT representation contains PROJCS["unnamed", so you can use that. Ugh, nevermind, that is still 286 chars.

Instead of CharField with a max length, I think I will transition to TextField here.

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