adapting spatial points and wrld_smpl to a reference system implicit in a .nc file

Dear all,

Im trying to overlap these points:
https://www.dropbox.com/s/awdclg4cvsdngej/clean%20urosaurus%20records.csv?dl=0

and a wrld_simpl object:
library(maptools)
data(wrld_simpl)

Over this raster layer
https://www.dropbox.com/sh/qcw174tgogpnz7s/AAByDc3TeyFe3W4nEqTFix6Oa?dl=0

This rastr comes from a .nc file without a reference system. The author of
that .nc file gave me the following data about the .nc.

The projection is *Lambert conformal conic* projection
CEN_LAT = 38.0
CEN_LON = -100.0
TRUELAT1 = 25.
TRUELAT2 = 45.

However, despite i have gone through many sites in the internet, i cant
figure it out:

a) if that is all the data i need to set a reference system for my points
and the wrld_simp object.

b) how to change a typical CRS object with such data

Ex.CRS ("+proj=lcc+lat_0=38.0+lon0_2=-100+ellps=WGS84")

Where do i enter the TRUELAT and CENLAT values?
Are there any site that explains easily what the fields in the CRS mean and
how to change them?

Thanks in advance.

On 02/22/2016 09:50 AM, Agus Camacho wrote:

Dear all,

Im trying to overlap these points:

https://www.dropbox.com/s/awdclg4cvsdngej/clean%20urosaurus%20records.csv?dl=0

and a wrld_simpl object:
library(maptools)
data(wrld_simpl)

Over this raster layer

https://www.dropbox.com/sh/qcw174tgogpnz7s/AAByDc3TeyFe3W4nEqTFix6Oa?dl=0

This rastr comes from a .nc file without a reference system. The author

of

that .nc file gave me the following data about the .nc.

The projection is *Lambert conformal conic* projection
CEN_LAT = 38.0
CEN_LON = -100.0
TRUELAT1 = 25.
TRUELAT2 = 45.

However, despite i have gone through many sites in the internet, i cant
figure it out:

a) if that is all the data i need to set a reference system for my points
and the wrld_simp object.

b) how to change a typical CRS object with such data

Ex.CRS ("+proj=lcc+lat_0=38.0+lon0_2=-100+ellps=WGS84")

Where do i enter the TRUELAT and CENLAT values?
Are there any site that explains easily what the fields in the CRS mean

and

how to change them?

Thanks in advance.

https://github.com/OSGeo/proj.4/wiki/GenParms
https://trac.osgeo.org/proj/wiki/GenParms

I believe:
+lat_0  = CEN_LAT   Latitude of origin
+lat_1  = TRUELAT1   Latitude of first standard parallel
+lat_2  = TRUELAT2   Latitude of second standard parallel
+lon_0  = CEN_LON   Central meridian

proj strings are defined by the proj4 libary. It's website listed above
and the associated mailing lists or gis stackexchange would be the
places to get help on it.
https://lists.osgeo.org/mailman/listinfo/metacrs

It often helps to browse similar projections on
http://spatialreference.org/
http://epsg.io/

Enjoy,
Alex

Thanks Alex, but the locations still fall in the sea when i plot them
using your recommended Solution. I looked at the sites you proposed and
they have other values for lat_1, lat_0, etc..

2016-02-22 11:04 GMT-07:00 Alex M <tech_dev at wildintellect.com>:

On 02/22/2016 09:50 AM, Agus Camacho wrote:

Dear all,

Im trying to overlap these points:

https://www.dropbox.com/s/awdclg4cvsdngej/clean%20urosaurus%20records.csv?dl=0

and a wrld_simpl object:
library(maptools)
data(wrld_simpl)

Over this raster layer

https://www.dropbox.com/sh/qcw174tgogpnz7s/AAByDc3TeyFe3W4nEqTFix6Oa?dl=0

This rastr comes from a .nc file without a reference system. The author

of

that .nc file gave me the following data about the .nc.

The projection is *Lambert conformal conic* projection
CEN_LAT = 38.0
CEN_LON = -100.0
TRUELAT1 = 25.
TRUELAT2 = 45.

However, despite i have gone through many sites in the internet, i cant
figure it out:

a) if that is all the data i need to set a reference system for my

points

and the wrld_simp object.

b) how to change a typical CRS object with such data

Ex.CRS ("+proj=lcc+lat_0=38.0+lon0_2=-100+ellps=WGS84")

Where do i enter the TRUELAT and CENLAT values?
Are there any site that explains easily what the fields in the CRS mean

and

how to change them?

Thanks in advance.

https://github.com/OSGeo/proj.4/wiki/GenParms
https://trac.osgeo.org/proj/wiki/GenParms

I believe:
+lat_0  = CEN_LAT   Latitude of origin
+lat_1  = TRUELAT1   Latitude of first standard parallel
+lat_2  = TRUELAT2   Latitude of second standard parallel
+lon_0  = CEN_LON   Central meridian

proj strings are defined by the proj4 libary. It's website listed above
and the associated mailing lists or gis stackexchange would be the
places to get help on it.
https://lists.osgeo.org/mailman/listinfo/metacrs

It often helps to browse similar projections on
http://spatialreference.org/
http://epsg.io/

Enjoy,
Alex

--
Agust?n Camacho Guerrero.
Doutor em Zoologia.
Laborat?rio de Herpetologia, Departamento de Zoologia, Instituto de
Bioci?ncias, USP.
Rua do Mat?o, trav. 14, n? 321, Cidade Universit?ria,
S?o Paulo - SP, CEP: 05508-090, Brasil.