CGIAR DEM converted to XYZ consists of Nodata only The 2019 Stack Overflow Developer Survey Results Are InCGIAR DEM + gdalwarp — projection to Cartesian is not happeningExtraction of DEM from netCDF file into ASCII XYZ formatShould only a “bare-earth” DEM be used when calculating CTI?How to fill holes/missing values in XYZ data / a DEM with QGIS?QGIS - .vrt DEM layer only partially goes to hillshadeRecommended NoData value for DEM/DTMs created using gdalFilling nodata in a DEM using values from another DEM (in QGIS)Mapserver / QGis and DEM GeoTIFF different nodata values behaviourGenerate XYZ coordinates of DEM mesh/gridFilling NoData around bridges in DEMGDAL: gdallocationinfo of CGIAR mosaic elevation data
How long do I have to send payment?
Why don't Unix/Linux systems traverse through directories until they find the required version of a linked library?
I see my dog run
Is this food a bread or a loaf?
What is the motivation for a law requiring 2 parties to consent for recording a conversation
It's possible to achieve negative score?
Deadlock Graph and Interpretation, solution to avoid
Is it possible to build an equivalent function just looking at the input and output of the original function?
What could be the right powersource for 15 seconds lifespan disposable giant chainsaw?
What tool would a Roman-age civilisation use to reduce/breakup silver and other metals?
Does a dangling wire really electrocute me if I'm standing in water?
Supports in 3d printing
Why Did Howard Stark Use All The Vibranium They Had On A Prototype Shield?
Can I write a for loop that iterates over both collections and arrays?
Falsification in Math vs Science
Access elements in std::string where positon of string is greater than its size
How are circuits which use complex ICs normally simulated?
Monty Hall variation
What is the best strategy for white in this position?
Which Sci-Fi work first showed weapon of galactic-scale mass destruction?
The meaning of "à force"
What do the Banks children have against barley water?
Is the gradient of the self-intersections of a curve zero?
Plural of waste
CGIAR DEM converted to XYZ consists of Nodata only
The 2019 Stack Overflow Developer Survey Results Are InCGIAR DEM + gdalwarp — projection to Cartesian is not happeningExtraction of DEM from netCDF file into ASCII XYZ formatShould only a “bare-earth” DEM be used when calculating CTI?How to fill holes/missing values in XYZ data / a DEM with QGIS?QGIS - .vrt DEM layer only partially goes to hillshadeRecommended NoData value for DEM/DTMs created using gdalFilling nodata in a DEM using values from another DEM (in QGIS)Mapserver / QGis and DEM GeoTIFF different nodata values behaviourGenerate XYZ coordinates of DEM mesh/gridFilling NoData around bridges in DEMGDAL: gdallocationinfo of CGIAR mosaic elevation data
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
I have a 30-by-30 tile from 
http://srtm.csi.cgiar.org/srtmdata/
Later I pre-process as outlined in the previous question CGIAR DEM + gdalwarp -- projection to Cartesian is not happening
(see the question and the answer therein).
After this, I run gdal_translate -of XYZ result_europe.tmerc.tif europe.xyz,
but head europe.xyz yields
1455914.01239279192 -1554769.20640147454 -32768
1455993.40596163366 -1554769.20640147454 -32768
1456072.79953047587 -1554769.20640147454 -32768
1456152.19309931761 -1554769.20640147454 -32768
1456231.58666815935 -1554769.20640147454 -32768
1456310.98023700155 -1554769.20640147454 -32768
1456390.37380584329 -1554769.20640147454 -32768
1456469.7673746855 -1554769.20640147454 -32768
1456549.16094352724 -1554769.20640147454 -32768
1456628.55451236898 -1554769.20640147454 -32768
Same story with tail. So I presume all of them are missing values.
How to fix this?
dem
asked Apr 4 at 14:41
IlonpilaajaIlonpilaaja
1366
add a comment |
I have a 30-by-30 tile from
http://srtm.csi.cgiar.org/srtmdata/
Later I pre-process as outlined in the previous question CGIAR DEM + gdalwarp -- projection to Cartesian is not happening
(see the question and the answer therein).
After this, I run gdal_translate -of XYZ result_europe.tmerc.tif europe.xyz,
but head europe.xyz yields
1455914.01239279192 -1554769.20640147454 -32768
1455993.40596163366 -1554769.20640147454 -32768
1456072.79953047587 -1554769.20640147454 -32768
1456152.19309931761 -1554769.20640147454 -32768
1456231.58666815935 -1554769.20640147454 -32768
1456310.98023700155 -1554769.20640147454 -32768
1456390.37380584329 -1554769.20640147454 -32768
1456469.7673746855 -1554769.20640147454 -32768
1456549.16094352724 -1554769.20640147454 -32768
1456628.55451236898 -1554769.20640147454 -32768
Same story with tail. So I presume all of them are missing values.
How to fix this?
dem
asked Apr 4 at 14:41
IlonpilaajaIlonpilaaja
1366
add a comment |
I have a 30-by-30 tile from
http://srtm.csi.cgiar.org/srtmdata/
Later I pre-process as outlined in the previous question CGIAR DEM + gdalwarp -- projection to Cartesian is not happening
(see the question and the answer therein).
After this, I run gdal_translate -of XYZ result_europe.tmerc.tif europe.xyz,
but head europe.xyz yields
1455914.01239279192 -1554769.20640147454 -32768
1455993.40596163366 -1554769.20640147454 -32768
1456072.79953047587 -1554769.20640147454 -32768
1456152.19309931761 -1554769.20640147454 -32768
1456231.58666815935 -1554769.20640147454 -32768
1456310.98023700155 -1554769.20640147454 -32768
1456390.37380584329 -1554769.20640147454 -32768
1456469.7673746855 -1554769.20640147454 -32768
1456549.16094352724 -1554769.20640147454 -32768
1456628.55451236898 -1554769.20640147454 -32768
Same story with tail. So I presume all of them are missing values.
How to fix this?
dem
asked Apr 4 at 14:41
IlonpilaajaIlonpilaaja
1366
I have a 30-by-30 tile from
http://srtm.csi.cgiar.org/srtmdata/
Later I pre-process as outlined in the previous question CGIAR DEM + gdalwarp -- projection to Cartesian is not happening
(see the question and the answer therein).
After this, I run gdal_translate -of XYZ result_europe.tmerc.tif europe.xyz,
but head europe.xyz yields
1455914.01239279192 -1554769.20640147454 -32768
1455993.40596163366 -1554769.20640147454 -32768
1456072.79953047587 -1554769.20640147454 -32768
1456152.19309931761 -1554769.20640147454 -32768
1456231.58666815935 -1554769.20640147454 -32768
1456310.98023700155 -1554769.20640147454 -32768
1456390.37380584329 -1554769.20640147454 -32768
1456469.7673746855 -1554769.20640147454 -32768
1456549.16094352724 -1554769.20640147454 -32768
1456628.55451236898 -1554769.20640147454 -32768
Same story with tail. So I presume all of them are missing values.
How to fix this?
dem
dem
asked Apr 4 at 14:41
IlonpilaajaIlonpilaaja
1366
asked Apr 4 at 14:41
IlonpilaajaIlonpilaaja
1366
asked Apr 4 at 14:41
IlonpilaajaIlonpilaaja
1366
asked Apr 4 at 14:41
IlonpilaajaIlonpilaaja
1366
asked Apr 4 at 14:41
IlonpilaajaIlonpilaaja
1366
1366
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Using the coordinate system that you are means that both in the beginning and in the end of the file you will have lots and lots of nodata values. Now, the way that the gdal version of the XYZ format works means that -32768 is the value chosen for nodata. With that in mind, you'll have to remove all those nodata values, which is a bit of work.
How you go about removing those lines with nodata is going to depend a lot on which tools you are comfortable with.
answered Apr 4 at 14:56
Mikkel Lydholm RasmussenMikkel Lydholm Rasmussen
5,073819
Currently I am running something like this:cat europe.xyz | sed '/s+-32768$/d' > europe_curated.xyz. So this is not unusual, then, to have thosenodatavalues after all the transformations.
– Ilonpilaaja
Apr 4 at 15:15
add a comment |
Your Answer
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "79"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fgis.stackexchange.com%2fquestions%2f317794%2fcgiar-dem-converted-to-xyz-consists-of-nodata-only%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Using the coordinate system that you are means that both in the beginning and in the end of the file you will have lots and lots of nodata values. Now, the way that the gdal version of the XYZ format works means that -32768 is the value chosen for nodata. With that in mind, you'll have to remove all those nodata values, which is a bit of work.
How you go about removing those lines with nodata is going to depend a lot on which tools you are comfortable with.
answered Apr 4 at 14:56
Mikkel Lydholm RasmussenMikkel Lydholm Rasmussen
5,073819
Currently I am running something like this:cat europe.xyz | sed '/s+-32768$/d' > europe_curated.xyz. So this is not unusual, then, to have thosenodatavalues after all the transformations.
– Ilonpilaaja
Apr 4 at 15:15
add a comment |
Using the coordinate system that you are means that both in the beginning and in the end of the file you will have lots and lots of nodata values. Now, the way that the gdal version of the XYZ format works means that -32768 is the value chosen for nodata. With that in mind, you'll have to remove all those nodata values, which is a bit of work.
How you go about removing those lines with nodata is going to depend a lot on which tools you are comfortable with.
answered Apr 4 at 14:56
Mikkel Lydholm RasmussenMikkel Lydholm Rasmussen
5,073819
Currently I am running something like this:cat europe.xyz | sed '/s+-32768$/d' > europe_curated.xyz. So this is not unusual, then, to have thosenodatavalues after all the transformations.
– Ilonpilaaja
Apr 4 at 15:15
add a comment |
Using the coordinate system that you are means that both in the beginning and in the end of the file you will have lots and lots of nodata values. Now, the way that the gdal version of the XYZ format works means that -32768 is the value chosen for nodata. With that in mind, you'll have to remove all those nodata values, which is a bit of work.
How you go about removing those lines with nodata is going to depend a lot on which tools you are comfortable with.
answered Apr 4 at 14:56
Mikkel Lydholm RasmussenMikkel Lydholm Rasmussen
5,073819
Using the coordinate system that you are means that both in the beginning and in the end of the file you will have lots and lots of nodata values. Now, the way that the gdal version of the XYZ format works means that -32768 is the value chosen for nodata. With that in mind, you'll have to remove all those nodata values, which is a bit of work.
How you go about removing those lines with nodata is going to depend a lot on which tools you are comfortable with.
answered Apr 4 at 14:56
Mikkel Lydholm RasmussenMikkel Lydholm Rasmussen
5,073819
answered Apr 4 at 14:56
Mikkel Lydholm RasmussenMikkel Lydholm Rasmussen
5,073819
answered Apr 4 at 14:56
Mikkel Lydholm RasmussenMikkel Lydholm Rasmussen
5,073819
answered Apr 4 at 14:56
Mikkel Lydholm RasmussenMikkel Lydholm Rasmussen
5,073819
5,073819
Currently I am running something like this:cat europe.xyz | sed '/s+-32768$/d' > europe_curated.xyz. So this is not unusual, then, to have thosenodatavalues after all the transformations.
– Ilonpilaaja
Apr 4 at 15:15
add a comment |
Currently I am running something like this:cat europe.xyz | sed '/s+-32768$/d' > europe_curated.xyz. So this is not unusual, then, to have thosenodatavalues after all the transformations.
– Ilonpilaaja
Apr 4 at 15:15
Currently I am running something like this:
cat europe.xyz | sed '/s+-32768$/d' > europe_curated.xyz. So this is not unusual, then, to have those nodata values after all the transformations.– Ilonpilaaja
Apr 4 at 15:15
Currently I am running something like this:
cat europe.xyz | sed '/s+-32768$/d' > europe_curated.xyz. So this is not unusual, then, to have those nodata values after all the transformations.– Ilonpilaaja
Apr 4 at 15:15
add a comment |
Thanks for contributing an answer to Geographic Information Systems Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fgis.stackexchange.com%2fquestions%2f317794%2fcgiar-dem-converted-to-xyz-consists-of-nodata-only%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
