Welcome to Geographic Information Systems Stack Exchange

GIS Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. It's built and run by you as part of the Stack Exchange network of Q&A sites. With your help, we're working together to build a library of detailed answers to every question about geographic information systems.

Your most important question is important to us

Asking one, and only one, important question within your Question helps attract prompt and clear Answers.

Your other questions are just as easy to research/ask separately!

Writing at least a paragraph helps make your questions and answers easy to follow.

We're a little bit different from other sites. Here's how:


Ask questions, get answers, no distractions

This site is all about getting answers. It's not a discussion forum. There's no chit-chat.

Just questions...

...and answers.

up vote

Good answers are voted up and rise to the top.

The best answers show up first so that they are always easy to find.

accept

The person who asked can mark one answer as "accepted".

Accepting doesn't mean it's the best answer, it just means that it worked for the person who asked.

Converting raster file from float to integer type in ArcGIS for Desktop?

up vote 14 down vote favorite

I have a float type raster file (an NDVI made from ERDAS IMAGINE) and would like to convert it to an interger type raster file in order to use Focal Statistics function (Majority). Is there any way to do this?

2 Answers

up vote 4 down vote accept

From the fact that you plan to use focal statistics I infer that you must be able to use the spatial analyst extension.

In the spatial analyst toolbox there is a tool Int in the Math toolset which converts a floating point raster to an integer raster.

up vote 3 down vote

Menno's answer will work but it will work but it will always round down. For example, 99.99999 becomes 99.

This function in the raster calculator or map algebra tool will do logical rounding.

Int(yourraster + 0.5).

This way 99.99999 becomes 100 and and 99.49999 becomes 99.


Get answers to practical, detailed questions

Focus on questions about an actual problem you have faced. Include details about what you have tried and exactly what you are trying to do.

Ask about...

  • Specific questions concerning geographic information systems and science
  • Real problems or questions that you’ve encountered

Not all questions work well in our format. Avoid questions that are primarily opinion-based, or that are likely to generate discussion rather than answers.

Questions that need improvement may be closed until someone fixes them.

Don't ask about...

  • Anything not directly related to geographic information systems
  • Questions that are primarily opinion-based
  • Questions with too many possible answers or that would require an extremely long answer

Tags make it easy to find interesting questions

All questions are tagged with their subject areas. Each can have up to 5 tags, since a question might be related to several subjects.

Click any tag to see a list of questions with that tag, or go to the tag list to browse for topics that interest you.

Converting raster file from float to integer type in ArcGIS for Desktop?

up vote 14 down vote

I have a float type raster file (an NDVI made from ERDAS IMAGINE) and would like to convert it to an interger type raster file in order to use Focal Statistics function (Majority). Is there any way to do this?


You earn reputation when people vote on your posts

Your reputation score goes up when others vote up your questions, answers and edits.

+5 question voted up
+10 answer voted up
+15 answer is accepted
+2 edit approved

As you earn reputation, you'll unlock new privileges like the ability to vote, comment, and even edit other people's posts.

Reputation Privilege
15 Vote up
50 Leave comments
125 Vote down (costs 1 rep on answers)

At the highest levels, you'll have access to special moderation tools. You'll be able to work alongside our community moderators to keep the site focused and helpful.

2000 Edit other people's posts
3000 Vote to close, reopen, or migrate questions
10000 Access to moderation tools
see all privileges

Improve posts by editing or commenting

Our goal is to have the best answers to every question, so if you see questions or answers that can be improved, you can edit them.

Use edits to fix mistakes, improve formatting, or clarify the meaning of a post.

Use comments to ask for more information or clarify a question or answer.

You can always comment on your own questions and answers. Once you earn 50 reputation, you can comment on anybody's post.

Remember: we're all here to learn, so be friendly and helpful!

up vote 9 down vote

From the fact that you plan to use focal statistics I infer that you must be able to use the spatial analyst extension.

In the spatial analyst toolbox there is a tool Int in the Math toolset which converts a floating point raster to an integer raster.

edit

Thanks Menno. It works for me. - Gloria Oct 8 '14 at 3:27

add comment


Unlock badges for special achievements

Badges are special achievements you earn for participating on the site. They come in three levels: bronze, silver, and gold.

In fact, you can earn a badge just for reading this page:

 Informed Read the entire tour page
 Student First question with score of 1 or more
 Editor First edit
 Good Answer Answer score of 25 or more
 Civic Duty Vote 300 or more times
 Famous Question Question with 10,000 views

see all badges


Find a question to answer, or ask your own

Looking for more in-depth information on the site? Visit the Help Center

Geographic Information Systems Stack Exchange is part of the Stack Exchange network

Like this site? Stack Exchange is a network of 148 Q&A sites just like it. Check out the full list of sites.

Stack Exchange