Replacing data in raster using condition?

up vote
1
down vote

favorite

I have a raster dataset in ArcGIS displaying altitude.

I want to replace all values < 8 with value 8.

Other values have to stay the same. How can I do this?

I tried raster calculator, but I don't seem to get the expression right.

edited Nov 28 at 11:17

PolyGeo♦

53k1779237

asked Nov 28 at 10:50

Anne

add a comment |

up vote
1
down vote

favorite

I have a raster dataset in ArcGIS displaying altitude.

I want to replace all values < 8 with value 8.

Other values have to stay the same. How can I do this?

I tried raster calculator, but I don't seem to get the expression right.

edited Nov 28 at 11:17

PolyGeo♦

53k1779237

asked Nov 28 at 10:50

Anne

add a comment |

up vote
1
down vote

favorite

I have a raster dataset in ArcGIS displaying altitude.

I want to replace all values < 8 with value 8.

Other values have to stay the same. How can I do this?

I tried raster calculator, but I don't seem to get the expression right.

edited Nov 28 at 11:17

PolyGeo♦

53k1779237

asked Nov 28 at 10:50

Anne

I have a raster dataset in ArcGIS displaying altitude.

I want to replace all values < 8 with value 8.

Other values have to stay the same. How can I do this?

I tried raster calculator, but I don't seem to get the expression right.

arcgis-desktop spatial-analyst raster-calculator replace

edited Nov 28 at 11:17

PolyGeo♦

53k1779237

asked Nov 28 at 10:50

Anne

edited Nov 28 at 11:17

PolyGeo♦

53k1779237

asked Nov 28 at 10:50

Anne

edited Nov 28 at 11:17

PolyGeo♦

53k1779237

edited Nov 28 at 11:17

PolyGeo♦

53k1779237

edited Nov 28 at 11:17

PolyGeo♦

53k1779237

asked Nov 28 at 10:50

Anne

asked Nov 28 at 10:50

Anne

asked Nov 28 at 10:50

Anne

add a comment |

2 Answers
2

active

oldest

votes

up vote
2
down vote

accepted

With the raster calculator, you can use the Con() statement(condiotion, value if true, value if false)

Con("raster" < 8 , 8, "raster")

answered Nov 28 at 10:58

radouxju

39.4k140112

It worked. Thank you very much.
– Anne
Nov 28 at 11:20

add a comment |

up vote
1
down vote

# Import system modules   

import arcpy

from arcpy import env

from arcpy.sa import *



# Set environment settings

env.workspace = "C:/project/input/data"



# Execute Con

outCon = Con("altitude" < 8, 8, "altitude")



# Save the outputs 

outCon.save("C:/project/output/output.img")

References:

Tools > Tool reference > Spatial Analyst toolbox > Conditional toolset > Con

Using Con in Raster Calculator of ArcGIS for Desktop? [closed]

How to use OR in a CON statement, in the ArcGIS Raster Calculator?

edited Nov 28 at 11:22

answered Nov 28 at 11:17

Taras

1,8202522

add a comment |

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

up vote
2
down vote

accepted

With the raster calculator, you can use the Con() statement(condiotion, value if true, value if false)

Con("raster" < 8 , 8, "raster")

answered Nov 28 at 10:58

radouxju

39.4k140112

It worked. Thank you very much.
– Anne
Nov 28 at 11:20

add a comment |

up vote
2
down vote

accepted

With the raster calculator, you can use the Con() statement(condiotion, value if true, value if false)

Con("raster" < 8 , 8, "raster")

answered Nov 28 at 10:58

radouxju

39.4k140112

It worked. Thank you very much.
– Anne
Nov 28 at 11:20

add a comment |

up vote
2
down vote

accepted

With the raster calculator, you can use the Con() statement(condiotion, value if true, value if false)

Con("raster" < 8 , 8, "raster")

answered Nov 28 at 10:58

radouxju

39.4k140112

With the raster calculator, you can use the Con() statement(condiotion, value if true, value if false)

Con("raster" < 8 , 8, "raster")

answered Nov 28 at 10:58

radouxju

39.4k140112

answered Nov 28 at 10:58

radouxju

39.4k140112

answered Nov 28 at 10:58

radouxju

39.4k140112

answered Nov 28 at 10:58

radouxju

39.4k140112

It worked. Thank you very much.
– Anne
Nov 28 at 11:20

add a comment |

It worked. Thank you very much.
– Anne
Nov 28 at 11:20

It worked. Thank you very much.
– Anne
Nov 28 at 11:20

add a comment |

up vote
1
down vote

# Import system modules   

import arcpy

from arcpy import env

from arcpy.sa import *



# Set environment settings

env.workspace = "C:/project/input/data"



# Execute Con

outCon = Con("altitude" < 8, 8, "altitude")



# Save the outputs 

outCon.save("C:/project/output/output.img")

References:

Tools > Tool reference > Spatial Analyst toolbox > Conditional toolset > Con

Using Con in Raster Calculator of ArcGIS for Desktop? [closed]

How to use OR in a CON statement, in the ArcGIS Raster Calculator?

edited Nov 28 at 11:22

answered Nov 28 at 11:17

Taras

1,8202522

add a comment |

up vote
1
down vote

# Import system modules   

import arcpy

from arcpy import env

from arcpy.sa import *



# Set environment settings

env.workspace = "C:/project/input/data"



# Execute Con

outCon = Con("altitude" < 8, 8, "altitude")



# Save the outputs 

outCon.save("C:/project/output/output.img")

References:

Tools > Tool reference > Spatial Analyst toolbox > Conditional toolset > Con

Using Con in Raster Calculator of ArcGIS for Desktop? [closed]

How to use OR in a CON statement, in the ArcGIS Raster Calculator?

edited Nov 28 at 11:22

answered Nov 28 at 11:17

Taras

1,8202522

add a comment |

up vote
1
down vote

# Import system modules   

import arcpy

from arcpy import env

from arcpy.sa import *



# Set environment settings

env.workspace = "C:/project/input/data"



# Execute Con

outCon = Con("altitude" < 8, 8, "altitude")



# Save the outputs 

outCon.save("C:/project/output/output.img")

References:

Tools > Tool reference > Spatial Analyst toolbox > Conditional toolset > Con

Using Con in Raster Calculator of ArcGIS for Desktop? [closed]

How to use OR in a CON statement, in the ArcGIS Raster Calculator?

edited Nov 28 at 11:22

answered Nov 28 at 11:17

Taras

1,8202522

# Import system modules   

import arcpy

from arcpy import env

from arcpy.sa import *



# Set environment settings

env.workspace = "C:/project/input/data"



# Execute Con

outCon = Con("altitude" < 8, 8, "altitude")



# Save the outputs 

outCon.save("C:/project/output/output.img")

References:

Tools > Tool reference > Spatial Analyst toolbox > Conditional toolset > Con

Using Con in Raster Calculator of ArcGIS for Desktop? [closed]

How to use OR in a CON statement, in the ArcGIS Raster Calculator?

edited Nov 28 at 11:22

answered Nov 28 at 11:17

Taras

1,8202522

edited Nov 28 at 11:22

answered Nov 28 at 11:17

Taras

1,8202522

answered Nov 28 at 11:17

Taras

1,8202522

answered Nov 28 at 11:17

Taras

1,8202522

add a comment |

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